Commonwealth v. Colon ( 2019 )


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    SJC–12362
    COMMONWEALTH   vs.   JOSE COLON.
    Worcester.    October 2, 2018. - May 3, 2019.
    Present (Sitting at Worcester): Gants, C.J., Lenk, Gaziano,
    Lowy, Budd, Cypher, & Kafker, JJ.
    Homicide. Jury and Jurors. Interpreter. Due Process of Law,
    Presence of defendant in courtroom, Fair trial. Search and
    Seizure, Consent. Evidence, Hearsay, Chain of custody.
    Practice, Criminal, Jury and jurors, Deliberation of jury,
    Examination of jurors, Voir dire, Interpreter, Presence of
    defendant, Public trial, Hearsay, Assistance of counsel,
    Capital case.
    Indictment found and returned in the Superior Court
    Department on November 18, 2005.
    A pretrial motion to suppress evidence was heard by C.
    Jeffrey Kinder, J., and the case was tried before Richard T.
    Tucker, J.
    Elaine Pourinski for the defendant.
    Ellyn H. Lazar, Assistant District Attorney, for the
    Commonwealth.
    LENK, J.     In the summer of 2005, the victim was beaten and
    stabbed to death near a set of railroad tracks in Dudley.    In
    2
    2013, the defendant was convicted by a Superior Court jury of
    murder in the first degree for his role in the killing.       In this
    direct appeal, the defendant maintains that a new trial is
    required because the judge did not declare a mistrial after
    members of the jury were exposed to an extraneous influence, and
    that the judge committed reversible error by partially excluding
    the defendant from the subsequent voir dire of the deliberating
    jury.   In addition, the defendant argues that the judge should
    have allowed his request for individual voir dire on questions
    of ethnic bias, and abused his discretion in certain evidentiary
    rulings.    The defendant also asks us to exercise our
    extraordinary power under G. L. c. 278, § 33E, to order a new
    trial or to reduce the degree of guilt.
    We affirm the conviction and decline to exercise our
    extraordinary powers to grant relief under G. L. c. 278, § 33E.
    1.     Facts.   We summarize the facts that the jury could have
    found, reserving additional details for discussion of specific
    issues.    See Commonwealth v. Clemente, 
    452 Mass. 295
    , 299
    (2008).
    Late on the evening of July 22, 2005, the victim and Jayser
    Cruz were socializing at the victim's family home; the victim
    and Cruz were family friends.     At some point during the evening,
    the victim's sister heard Cruz express an interest in a knife
    that was lying on a table.    The victim and Cruz then left the
    3
    house together.    According to the victim's sister, Cruz took the
    knife when they left.
    Later that evening, the defendant was with Cruz and the
    victim at a convenience store.     They ran into two women, the
    defendant's cousin, Maria Colon, 1 and one of her friends.
    0F                            Cruz
    and the victim were drunk.     The victim suggested that they all
    smoke marijuana, and the group walked to the nearby railroad
    tracks to do so.     Maria heard Cruz tell the defendant that Cruz
    recently had bought a new knife.
    After approximately fifteen minutes, Maria and her friend
    left to go home.    As they were walking away, Maria heard what
    sounded like "skin ripping."     When she looked back, she saw the
    defendant throwing rocks at the victim; she described the rocks
    as thin and estimated them to be approximately one inch in
    width.   Her friend saw the defendant throw four to six rocks,
    which hit the victim in the back.       The victim fell to the
    ground, where he kept asking the defendant to "stop."       Cruz was
    laughing.     When the defendant requested a knife, Cruz handed him
    a backpack.    Maria asked the defendant to stop; he told her to
    leave, or "it would happen to [her] as well."       At that point,
    Maria and her friend left the area.       When they last saw him, the
    victim was on the ground in a fetal position.
    1 Because they share a last name, we refer to the
    defendant's cousin, Maria Colon, by her first name.
    4
    The next morning, when the defendant came to Maria's house,
    she saw "little dots" and "splatter-marks" on his left leg.
    That afternoon, she saw the defendant at a laundromat.       When the
    defendant left the laundromat, the "little dots" on his pants
    were stained yellow, as though he had tried to wash them.
    That evening, the defendant's girlfriend and her friend
    picked up the defendant and they all drove around.     The
    defendant told his girlfriend that he had killed the victim, and
    he pointed toward something in the distance that "looked like
    feet."   He said that he had killed the victim "for us," and he
    warned her not to tell anyone or he would harm her siblings.
    Later that evening, the defendant telephoned Maria and told
    her that he had killed the victim.   The defendant explained that
    he had left the railroad tracks and was walking home, but then
    he returned to the railroad tracks, where he saw the victim
    getting up.   The defendant picked up a large rock and hit the
    victim in the head with it several times.
    The same day, the victim's body was discovered near the
    railroad tracks.   When a chemist from the State police crime
    laboratory arrived at the scene, he saw the victim lying on his
    back; his heavily-bruised face and clothing were covered with
    "red-brown staining."   A large rock, weighing roughly fourteen
    pounds, with red-brown stains, was next to the victim.       The
    stain later was determined to be the victim's blood.     The
    5
    medical examiner concluded that the cause of death was a
    combination of blunt force trauma to the head and two stab
    wounds to the body.     Deoxyribonucleic acid (DNA) testing
    indicated that the blood found on a pair of jeans recovered from
    the defendant's house was the victim's.
    2.   Prior proceedings.    In November, 2005, a grand jury
    returned indictments, charging the defendant, among other
    things, with murder in the first degree.     Thereafter, the
    defendant moved to suppress his statements to police and the
    items seized during the two searches of his house.     Following an
    evidentiary hearing, a Superior Court judge, who was not the
    trial judge, allowed the motions to suppress in part and denied
    them in part.    The judge found that the defendant's statements
    were obtained in violation of Miranda v. Arizona, 
    384 U.S. 436
    ,
    479 (1966), because the Spanish interpretation of the Miranda
    warnings provided to the defendant were inadequate to apprise him
    of his rights.    The judge denied the motion to suppress the
    evidence seized from the victim's house, after the judge
    determined that the defendant's consent to the first search had
    been validly obtained, and that police had had probable cause to
    obtain a warrant for the second search.
    In March, 2013, the defendant was tried before a Superior
    Court jury.     The jury convicted him of murder in the first
    6
    degree on theories of deliberate premeditation and extreme
    cruelty or atrocity.    The defendant timely appealed.
    3.    Discussion.   The defendant maintains that a new trial
    is required because the judge did not declare a mistrial when
    several deliberating jurors expressed concerns about their
    safety, and that the judge erred by partially excluding the
    defendant from the subsequent voir dire of the deliberating
    jury.    The defendant argues also that he was denied a fair trial
    because the judge did not conduct individual voir dire of the
    members of the venire with respect to questions of ethnic bias
    that defense counsel had requested be posed.    The defendant
    further asserts error in the denial of his motion to suppress
    physical evidence, as well as in the admission of out-of-court
    statements, and he contends that his attorney was ineffective in
    failing to make certain arguments at the hearing on the motion
    to suppress.   In addition, the defendant asks us to exercise our
    extraordinary power under G. L. c. 278, § 33E, to order a new
    trial or to reduce the degree of guilt.
    a.    Dismissal of jurors during deliberations.      The
    defendant argues that he was denied the right to a fair and
    impartial jury when, after substantial evidence of bias was
    brought to the judge's attention during deliberations, the judge
    did not excuse the entire jury.    Specifically, while the jury
    were deliberating, the juror in seat number 15 (juror no. 15)
    7
    notified a court officer that she was afraid of the
    repercussions of the potential verdict in the case.    She feared
    that if the jury were to find the defendant guilty, there could
    be possible retribution by gangs; if they were to find him not
    guilty, someone else would be stabbed.     Juror no. 15 was
    fearful, in part, because the defendant had heard her name.          The
    other jurors "were all there" during juror no. 15's conversation
    with the court officer; juror no. 15 reported that other jurors
    also previously expressed similar fears.    The judge found that
    juror no. 15 could not remain impartial and excused her.
    Because juror no. 15 reported that others had expressed
    similar "gang-related" fears, the judge conducted an individual
    voir dire of each of the remaining members of the jury. 2 1F   The
    juror in seat number 1 (juror no. 1) also was excused, after
    stating that he had been "watching to see if anyone is following
    me when I leave here."   The foreperson, who was in seat number 3
    (juror no. 3), reported that she had heard other jurors express
    fears about the proximity of the crime to "the location [in
    which] they lived" and "gang relation."    Juror no. 3 also said
    she had been "concerned," the day before deliberations began,
    that people the defendant might know would "go after us."       On
    2 Of the eleven remaining deliberating jurors, all but one
    had heard juror no. 15 express her concerns. The four alternate
    jurors, however, had not been present to hear her do so.
    8
    the first day of deliberations, however, juror no. 3 reported
    that she was no longer concerned.    The judge found that
    juror no. 3 "indicated very clearly that she didn't have any
    concerns now."   Over the defendant's objection, juror no. 3 was
    not excused.   The judge told juror no. 3 not to discuss the
    substance of the voir dire with anyone else.
    Juror nos. 1 and 15 were replaced with alternates, and the
    jury were instructed to begin deliberations anew.    The defendant
    objected that the jury were not struck entirely; he argued that
    the "fear running through the deliberations" prevented the jury
    from remaining impartial.   The motion was denied.   Approximately
    one hour later, the jurors returned a verdict finding the
    defendant guilty.
    On appeal, the defendant contends that the extraneous
    influences on the jury resulted in actual bias when the
    suggestion of gang activity was introduced during the process of
    deliberation, where no evidence of gang activity had been
    presented at trial.   The defendant argues that, as a result, he
    was denied the right to a fair and impartial jury when the judge
    declined to dismiss the entire jury.
    i.   Extraneous influence.   "Article 12 of the Massachusetts
    Declaration of Rights and the Sixth Amendment to the United
    States Constitution guarantee a criminal defendant the right to
    a trial before an impartial jury."     Commonwealth v. Philbrook,
    9
    
    475 Mass. 20
    , 30 (2016).    "The presence of even one partial
    juror violates this right."    Commonwealth v. Guisti, 
    434 Mass. 245
    , 251 (2001), S.C., 
    449 Mass. 1018
    (2007).    "Prohibiting
    premature jury deliberations, and extraneous influences on
    jurors" is one of the ways in which to safeguard a defendant's
    right to trial before an impartial jury.     
    Philbrook, supra
    .
    Accordingly, extraneous influences on jurors present a
    "serious question of possible prejudice" (citation omitted).
    
    Guisti, 434 Mass. at 251
    .     See 
    Philbrook, 475 Mass. at 30
    .    "An
    extraneous matter is one that involves information not part of
    the evidence at trial and raises a serious question of possible
    prejudice" (quotations and citation omitted).    
    Guisti, supra
    .
    See, e.g., Commonwealth v. Cuffie, 
    414 Mass. 632
    , 635 (1993)
    (juror made unauthorized visit to crime scene); Commonwealth v.
    Fidler, 
    377 Mass. 192
    , 194 (1979) (during deliberations, juror
    stated information not presented at trial).     A defendant bears
    the burden of demonstrating an extraneous influence by a
    preponderance of the evidence.    See Commonwealth v. Kincaid, 
    444 Mass. 381
    , 386-387 (2005), discussing 
    Fidler, 377 Mass. at 201
    .
    In this case, the defendant was Hispanic and had "tattoos
    on [his] hands"; the victim was Caucasian.     The case, as it was
    presented to the jury, did not involve allegations of gang
    involvement, and the record does not indicate that any evidence
    of gang affiliation was introduced at trial.    The Commonwealth's
    10
    theory was that the defendant killed the victim in order to be
    with the defendant's girlfriend.    Numerous jurors subsequently
    recalled juror no. 15's comments.    The conversation regarding
    gang involvement included discussion of the location of the
    crime and the "tattoos on the [defendant's] hands."
    Until jurors began discussing gang-related concerns, juror
    no. 3, for example, had not considered the defendant's tattoos
    to be meaningful; "I never noticed that.     I didn't even think --
    it never came into my . . . ."    The introduction of the concept
    of gang affiliation by juror no. 15, therefore, constituted
    "information not part of the evidence at trial," and, as
    evidenced by the fear it caused some jurors, "raises a serious
    question of possible prejudice" (citation omitted).    
    Guisti, 434 Mass. at 251
    .
    Nonetheless, not all extraneous jury discussion compromises
    a defendant's right to a fair trial, and the presence of an
    extraneous influence does not necessarily require a mistrial.
    See 
    Philbrook, 475 Mass. at 31
    .     See also Commonwealth v.
    Amirault, 
    404 Mass. 221
    , 232 (1989).     If a trial judge learns of
    such an influence, the judge must determine whether the jurors
    remain impartial and, if not, what remedy is required.     See
    
    Philbrook, supra
    .
    ii.   Impartiality of remaining jurors.    A trial judge has
    "discretion in addressing issues of extraneous influence on
    11
    jurors discovered during trial."   Commonwealth v. Trapp, 
    423 Mass. 356
    , 362, cert. denied, 
    519 U.S. 1045
    (1996).   Because the
    "determination of a juror's impartiality is essentially one of
    credibility, and therefore largely one of demeanor, [a
    reviewing] court give[s] a trial judge's determination of
    impartiality great deference" (quotations omitted).   
    Philbrook, 475 Mass. at 30
    , quoting Commonwealth v. Alicea, 
    464 Mass. 837
    ,
    849 (2013).   A reviewing court "will not disturb a judge's
    findings of impartiality," or a judge's finding that a juror is
    unbiased, "absent a clear showing of an abuse of discretion or
    that the finding was clearly erroneous."   See Commonwealth v.
    Sleeper, 
    435 Mass. 581
    , 587 (2002); Commonwealth v. McCowen, 
    458 Mass. 461
    , 493-494 (2010).
    Where a judge conducts individual voir dire of each juror,
    excuses all influenced jurors, and determines that the remaining
    jurors are impartial, a defendant's right to an impartial jury
    has not been violated.   See 
    Philbrook, 475 Mass. at 31
    (remaining jurors impartial after juror excused for deciding
    case prematurely); Commonwealth v. Maldonado, 
    429 Mass. 502
    ,
    506–507 (1999) (remaining jurors impartial after juror excused
    for fear of gang retribution); Commonwealth v. Kamara, 
    422 Mass. 614
    , 616–618 & n.1 (1996) (remaining jurors impartial after
    juror excused for telling other jurors defendant was member of
    gang).   See also Commonwealth v. Stanley, 
    363 Mass. 102
    , 104-105
    12
    (1973) (jurors impartial despite reading newspaper in
    deliberation room).
    In 
    Kamara, 422 Mass. at 616
    , one juror told the others that
    she knew the defendant, that the defendant was a member of a
    gang, and that she feared for her safety.          The trial judge
    excused the juror and questioned each remaining juror.           
    Id. at 617.
          The judge found that, although they had heard the
    extraneous information, the remaining jurors were able to be
    fair and impartial.       
    Id. at 617-618.
      We concluded that such a
    determination was not an abuse of discretion.          
    Id. at 620.
    Here, juror no. 15 did not claim to know the defendant, or
    to know that he was a member of a gang.           When she expressed fear
    of the defendant, the judge appropriately dismissed her,
    conducted an extensive voir dire of the remaining jurors, and
    dismissed an additional juror out of an "abundance of caution."
    Both counsel agreed to the dismissals of juror nos. 15 and 1.
    The other jurors stated individually that they had no similar
    concerns.      The judge appropriately instructed the jury that they
    were to disregard "any personal likes or dislikes, opinions,
    [or] prejudices," and were not to base their verdict on
    "speculation, surmise[,] or conjecture." 3   2F
    Although these instructions were administered prior to
    3
    deliberations, before juror nos. 1 and 15 were dismissed, there
    is nothing to suggest that the remaining jurors did not continue
    to heed them. See Commonwealth v. Stanley, 
    363 Mass. 102
    , 105
    13
    Having found that the remaining jurors were unafraid and
    could remain impartial, the judge was not obligated to dismiss
    them, and there was no abuse of discretion in his decision not
    to dismiss the entire jury.    "We are not prepared to substitute
    our judgment for that of the trial judge who heard the evidence,
    carefully interviewed the jurors individually, and made a
    finding that each juror could do his or her job unaffected by
    whatever extraneous information had been injected into the jury
    room."    
    Kamara, 422 Mass. at 620
    .
    b.   Lack of translators.   The defendant's native language
    was Spanish.   Throughout the trial, the defendant made use of
    two Spanish interpreters, who spoke to him through a headset.
    During the voir dire concerning the extraneous influence created
    by juror no. 15, the defendant was not provided with a
    translator.    The defendant argues that he thereby was denied the
    right to a public trial. 43F
    (1973) (court assumes instructions were followed). See also
    Commonwealth v. Maldonado, 
    429 Mass. 502
    , 506–507 813 (1999) (no
    error where judge dismissed one juror, questioned remaining
    jurors, and administered instructions regarding duty of
    impartiality). It would also have been prudent to instruct the
    newly constituted jury that the reasons for the juror's
    discharge had been personal and not related to the case. See
    Commonwealth v. Connor, 
    392 Mass. 838
    , 846 (1984) (jury should
    be instructed that reason for discharge is entirely personal).
    See also Commonwealth v. Dosanjos, 
    52 Mass. App. Ct. 531
    , 536
    (2001).
    4 In his brief, the defendant refers to this issue as the
    right to a "public trial"; at oral argument, the defendant
    14
    After juror no. 15 had been dismissed, and before any of
    the other deliberating jurors had been interviewed by the judge,
    defense counsel requested that the defendant be present during
    the voir dire of the remaining jurors.     The judge, however, was
    concerned that the jurors would not speak candidly about their
    fear of the defendant if they knew he was listening.    Prior to
    the individual voir dire of the deliberating jurors, the
    following exchange occurred:
    Defense counsel: "I think my client . . . [w]ell, I think
    he needs to be here."
    The judge:   "During the voir dire?"
    Defense counsel:   "You don't want him here during . . .?"
    The judge: "Yes; he can be here during the voir dire. I
    don't know that I want him to hear what's said, though."
    Defense counsel: "No -- I have no problem with the court's
    direction that if anybody is excused, it's for personal
    reasons."
    The judge: "I do not . . . want him to learn that one
    juror has left because she's fearful of him, because even
    if it's just a stare or something like that --"
    Defense counsel: "I don't think he's exhibited any
    behavior. He's basically just been sitting there looking
    claimed "a substantial right of the defendant to be present at
    crucial proceedings." We understand the defendant to be
    arguing, if obliquely, that the lack of translators implicated
    the right to be present at trial under art. 12 of the
    Massachusetts Declaration of Rights. The two rights are
    distinct, and we analyze them separately. See Commonwealth v.
    Dyer, 
    460 Mass. 728
    , 734-738 (2011), cert. denied, 
    566 U.S. 1026
    (2012). We determine that, although the right to a public trial
    was not implicated here, the right to be present at trial was.
    15
    straight ahead . . . . It's a delicate balance, because I
    have to protect his rights, also."
    The judge:   "What would you suggest?"
    Defense counsel:   "Well, if he's at the sidebar, does he
    hear?"
    The judge: "No; if he's sitting there with the headphones
    on, he'll get a translation of what is said."
    Defense counsel: "Yes; but isn't he entitled to know? I
    mean, he has rights also as a defendant, to know if we're
    dealing with the jury who is going to decide his fate.
    We've got competing interests here."
    . . .
    The judge: "The concern I have is that first of all, it
    may be fearful to the jurors to speak candidly if it's
    being interpreted to him."
    Defense counsel:   "That's a consideration -- I understand."
    The judge: "So, I think this has    to be done outside of his
    hearing, and you can explain that   some people -- whatever
    you explain -- had some concerns.    Whatever you think
    you're duty-bound to tell him. I    don't think you're duty-
    bound to tell him that people are   fearful of him."
    Defense counsel: "Oh, I agree with the court. I'm not
    duty-bound to tell him that; but my question is, any time
    anything of substance happens in a courtroom with a
    defendant, they have a right to be here. Now, I don't know
    how we get around that."
    The judge: "I understand . . . . I'm going to order that
    he can't hear it. If you wish thereafter whatever you
    think you're duty-bound to reveal, you should do that."
    Defense counsel: "So, your order is that we'll do the voir
    dire outside of the presence of the defendant?"
    The judge:   "No; he can be present, but not present with
    ears."
    16
    The judge effectuated the defendant's presence "without
    ears" by prohibiting interpreters at sidebar during the
    individual voir dire, such that the defendant could "watch" but
    would not understand what was being said.    Defense counsel then
    could relay pertinent information to the defendant at a later
    point.   Defense counsel agreed that, if a juror were excused,
    counsel would tell the defendant only that it was for "personal
    reasons," without explaining that any of the jurors had
    expressed fears of him.   Neither defense counsel nor the
    defendant objected to this procedure, and voir dire commenced
    without translation.
    i.   Right to a public trial.   The defendant argues for the
    first time on appeal that his right to a public trial, under the
    First and Sixth Amendments to the United States Constitution,
    was violated during the voir dire of the deliberating jurors.
    Even if this argument were not waived, it is unavailing.
    That individual voir dire took place at sidebar was not
    itself error; "the voir dire examination process itself took
    place, as it should have, in open court."   See Commonwealth v.
    Cohen, 
    456 Mass. 94
    , 117 (2010).    See also Wilder v. United
    States, 
    806 F.3d 653
    , 660 (1st Cir. 2015), cert. denied, 136 S.
    Ct. 2031 (2016) (conducting voir dire at sidebar in open court
    still enables members of public to "observe the individual
    questioning of jurors from their seats and attempt to discern
    17
    facial expressions or body language").     "Conducting voir dire
    examinations in open court [also] permits members of the public
    to observe the judge, as well as the jurors."      
    Cohen, 456 Mass. at 117
    .   Although the public cannot hear what is being said, the
    ability to observe the process "furthers the values that the
    public trial right is designed to protect" (citation omitted).
    See 
    id. ii. Right
    to be present at trial.      Whether the defendant
    can hear what is being said, however, implicates a different
    right:    the right to be present at trial.    "When a judge
    conducts an inquiry about a consequential matter, such as an
    allegation of serious misconduct of a juror or a suggestion of
    juror bias, the defendant is entitled, based on confrontation
    and fair trial rights, to be present."     Commonwealth v. Dyer,
    
    460 Mass. 728
    , 738 (2011), cert. denied, 
    566 U.S. 1026
    (2012).
    See Commonwealth v. Angiulo, 
    415 Mass. 502
    , 530 & n.26 (1993)
    (reversal required under art. 12 of Massachusetts Declaration of
    Rights where names of jurors were withheld and defendant and
    defense counsel were barred from voir dire regarding jurors'
    fear of defendant); Commonwealth v. Robichaud, 
    358 Mass. 300
    ,
    301–303 (1970) (reversal required under art. 12 where defendant
    was excluded from hearing on juror misconduct).
    "While the trial judge may perform minor administrative
    formalities outside the presence of the defendant, . . . the
    18
    judge may not bar the defendant from a voir dire during which
    jurors' impartiality may be discussed" (citation omitted).
    
    Angiulo, 415 Mass. at 530
    .   See, e.g., Commonwealth v. Dosanjos,
    
    52 Mass. App. Ct. 531
    , 535 (2001) ("serious error" for judge to
    exclude defendant from individual questioning of deliberating
    jurors); Commonwealth v. Caldwell, 
    45 Mass. App. Ct. 42
    , 45
    (1998) (error where deliberating juror was dismissed during
    colloquy held outside defendant's presence).
    Counsel's presence at sidebar and intention to relay
    information to a defendant does not substitute for the
    defendant's presence.   See 
    Robichaud, 358 Mass. at 301
    , 303
    (counsel's presence insufficient in defendant's absence);
    
    Dosanjos, 52 Mass. App. Ct. at 535
    (error despite counsel's
    presence); 
    Caldwell, 45 Mass. App. Ct. at 45
    (error
    notwithstanding counsel's presence).     This is especially so
    where, as here, counsel agrees to restrict the information that
    he would share with the defendant.     Indeed, this does not appear
    to be a case in which a defendant was "fully informed of
    everything that occurred" in his absence.     Contrast Commonwealth
    v. Martino, 
    412 Mass. 267
    , 286-287 (1992) (no reversible error
    where, after voir dire, defendant was fully informed of reason
    for juror's discharge and agreed to her dismissal).    Rather, the
    judge cautioned defense counsel not to explain the very thing
    the jurors were discussing -- "that people are fearful of him" -
    19
    - and requested that the defendant learn nothing more than that
    several jurors had been dismissed for "personal reasons."
    Where, without any action on his part, jurors fear a
    defendant, he does not forfeit his right to be present.     See
    
    Angiulo, 415 Mass. at 520
    , 522 (right to be present at voir dire
    where jurors felt "intimidated" by defendant, believed he was
    writing down information about them, and saw him giving them
    "[the] whammy" or "[the] evil eye").   Contrast Commonwealth v.
    Senati, 
    3 Mass. App. Ct. 304
    , 307 (1975) (defendant forfeited
    right to be present by refusing to obey court order to refrain
    from leaving dock and shouting during trial).   Nor may a judge
    seat a defendant far enough away that the defendant is unable to
    hear the proceedings, or conduct questioning, without
    interpretation, in a language the defendant does not understand. 5 4F
    In denying the defendant's request, it appears that the
    judge applied an analysis more appropriate to the consideration
    of the right to a public trial.   The judge stated that it would
    be sufficient for the defendant to "watch" without hearing,
    "[j]ust like we've said the open courtroom is satisfied if
    5 Of course, a defendant may waive the right to be present
    at sidebar. See 
    Dyer, 460 Mass. at 738
    . "More particularly, if
    the defendant makes no request to be present, the judge takes no
    steps to exclude him, and counsel never objects to his absence,
    the issue is waived and this court will not address it on
    appeal." 
    Id. There is
    no evidence on this record, however,
    that the defendant made such a waiver. See Commonwealth v.
    Caldwell, 
    45 Mass. App. Ct. 42
    , 46 (1998).
    20
    people can watch what's happening.   They don't have to sit at
    sidebar."   While it is true that the right to a public trial is
    satisfied without the public being present at sidebar, the same
    is not true for the defendant's right to be present at trial.
    The right to a public trial is premised on certain
    considerations, including the public perception of fairness in
    the courts; it is satisfied without hearing conversations at
    sidebar.    See Gannett Co. v. De Pasquale, 
    443 U.S. 368
    , 380
    (1979).    A defendant's right to be present at his or her own
    trial, by contrast, implicates additional concerns.   It provides
    the accused with information necessary to adjust the trial
    strategy, guarantees that a defendant always has the opportunity
    to object, and, in the event of conviction, ensures that the
    defendant is able fully to assist in an appeal, because the
    defendant understood the prior proceedings.   For a defendant, as
    distinct from the public, the proceedings must not only be seen,
    but also heard. 6
    5F
    6 This analysis applies whether a defendant is partially
    excluded due to an inability to understand English, or in any
    other manner. We are particularly troubled, however, that the
    defendant's inability to understand English was used to exclude
    him from hearing the proceedings. "A non-English speaker,
    throughout a legal proceeding, shall have a right to the
    assistance of a qualified interpreter." G. L. c. 221C, § 2. It
    is a judge's duty to aid, not hamper, a criminal defendant in
    understanding what is occurring at the defendant's own trial.
    21
    iii.     Prejudice.   Although the defendant's exclusion in
    this case was error, we must consider whether he thereby was
    prejudiced.   "The absence of the defendant from [the voir dire
    of deliberating jurors] does not automatically constitute
    reversible error" (citation omitted).     
    Sleeper, 435 Mass. at 588-589
    .   Although defense counsel initially requested the
    defendant's presence at voir dire, counsel ultimately did not
    object to the judge's decision not to allow that request.
    Therefore, we review for a substantial likelihood of a
    miscarriage of justice.    See 
    Dyer, 460 Mass. at 741
    .
    Had the defendant been present during voir dire, little
    would have changed.    Of the twelve jurors questioned, two were
    dismissed after expressing fear related to the defendant.
    Defense counsel then moved to dismiss all of the remaining
    jurors.    The judge denied that request, over counsel's
    objection.    Because his attorney already had moved to dismiss
    each juror, there was nothing more that the defendant could have
    requested in terms of relief.    Nor was the defendant in a
    position to make strategic decisions about cross-examination or
    introduction of evidence, informed by the content of the jurors'
    answers; the trial had concluded, deliberations had begun, and
    no additional evidence could have been presented.
    "It is frequently to the defendant's advantage to
    communicate orally with his counsel . . . since he may have
    22
    information which may aid his counsel in examining
    [individuals]."    
    Robichaud, 358 Mass. at 303
    .   At most, if he
    had been present, the defendant could have suggested additional
    questions for counsel to ask the jurors.     Yet, here, where the
    judge conducted an extensive voir dire of the deliberating
    jurors, the mere possibility that additional questions could
    have been asked is not sufficient to require a new trial.        "The
    defendant's presence at the hearing would not likely have
    yielded anything or altered its outcome."     
    Sleeper, 435 Mass. at 589
    (harmless error where judge properly excused biased juror
    outside defendant's presence).     See 
    Dosanjos, 52 Mass. App. Ct. at 536
    (harmless error to conduct voir dire in defendant's
    absence where defendant "offers no suggestion as to how he was
    prejudiced by the procedure" [citation omitted]).     See also
    Commonwealth v. Hicks, 
    22 Mass. App. Ct. 139
    , 147 (1986).        We
    are unable to conclude that the defendant's partial exclusion
    resulted in a substantial likelihood of a miscarriage of
    justice.
    c.    Individual voir dire of the venire on racial or ethnic
    bias.     The defendant argues that the judge's decision not to
    conduct individual voir dire of prospective jurors' ethnic bias,
    in the form of five questions that defense counsel had requested
    be posed to each member of the venire individually, deprived him
    of his right to a fair and impartial jury, and requires a new
    23
    trial. 7 6F   Stating that the twenty-two question case-specific jury
    questionnaire 8 was sufficient to accomplish the goal of obtaining
    7F
    information on potential bias, the judge denied the request. 9   8F
    7 It is not clear whether the defendant raised this claim on
    constitutional or statutory grounds. At least with regard to
    similar questions proposed for the written questionnaire, the
    defendant argued that the questioning was necessary to protect
    his rights under "the Sixth and Fourteenth Amendments to the
    United States Constitution and art. 12 of the Massachusetts
    Declaration of Rights."
    8 Voir dire of prospective jurors took place in four stages.
    First, each potential juror was given the "standard jury
    questionnaire." Second, the judge orally posed questions to the
    venire as a group. Third, each potential juror was given a
    twenty-two question written questionnaire, prepared specifically
    for this case. Fourth, each potential juror -- regardless of
    whether the juror had answered any questions affirmatively --
    came to the sidebar for additional questioning.
    9 One of the questions on the case-specific, twenty-two
    question juror questionnaire was the first of the five questions
    that defense counsel had requested be posed orally, specifically
    inquiring about the potential juror's beliefs as to a Hispanic
    defendant. See note 11, infra.
    The other four questions on potential bias toward a
    Hispanic defendant that were requested to be asked at voir dire
    were:
    "2. Do you believe that Hispanics are more likely to
    commit crimes than whites?
    "3. Would you believe the testimony of a white person over
    that of a Hispanic person simply because of skin color?
    "4. Would you give extra weight to the testimony of a
    white person claiming that a Hispanic person committed a
    crime?
    "5. Are you conscious of any feelings of racial bias or
    prejudice, which might tend to influence your judgement in
    this case, even in the slightest degree?"
    24
    The defendant is correct that, "in cases of interracial
    murder, a judge, if requested to do so, is required to conduct
    an individual voir dire on the issue of potential bias."
    Commonwealth v. Hunter, 
    427 Mass. 651
    , 654 (1998).    See
    Commonwealth v. Young, 
    401 Mass. 390
    , 398 (1987), overruled on
    another ground, Commonwealth v. Ramirez, 
    407 Mass. 553
    (1990)
    (establishing rule because of "reasonable possibility" that
    racial prejudice could affect jury's verdict in murder cases
    where defendant and victim are of different races).     We
    similarly have required individual voir dire in cases of
    interracial rape, Commonwealth v. Sanders, 
    383 Mass. 637
    , 640-
    641 (1981), and interracial sexual offenses against children,
    Commonwealth v. Hobbs, 
    385 Mass. 863
    , 873 (1982).     A written
    questionnaire does not suffice to fulfill this requirement.       See
    Young, supra at 397-398, citing Rosales-Lopez v. United States,
    
    451 U.S. 182
    , 190 (1981) and 
    Sanders, supra
    .   "As a matter of
    law we held that in such cases a substantial risk exists that
    the extraneous issue of race will affect the impartiality of the
    jury."   Commonwealth v. Otsuki, 
    411 Mass. 218
    , 227 (1991).
    As has the United States Supreme Court with the Federal
    cognate, we established this rule "as a matter of our
    supervisory power," based on the requirements of G. L. c. 234,
    § 28, the predecessor to G. L. c. 234A, § 67A, and not as a
    result of any constitutional mandate.   See 
    Young, 401 Mass. at 25
    398.   As part of our duty to oversee the courts of the
    Commonwealth, we adopted "the essence of the rule, stated by the
    plurality, in Rosales-Lopez, [451 U.S. at 190], 'that questions
    directed to the discovery of racial prejudice be asked in
    certain circumstances in which such an inquiry is not
    constitutionally mandated.'"     
    Id., quoting Rosales-Lopez,
    supra.
    Until today, we explicitly "have declined . . . to extend
    this rule to cases where the defendant and the victim are of
    different ethnic backgrounds."    
    Hunter, 427 Mass. at 654
    , citing
    Commonwealth v. De La Cruz, 
    405 Mass. 269
    , 272 (1989).     See
    
    Hunter, supra
    (no individual voir dire for Caucasian defendant
    and Filipino victim).    See also Commonwealth v. Pina, 
    430 Mass. 66
    , 72-73 (1999) (no individual voir dire for Cape Verdean
    defendant and Portuguese victim); De La 
    Cruz, 405 Mass. at 272
    ,
    274 (no individual voir dire for Hispanic defendant and
    Caucasian victim).    Contrast 
    Young, 401 Mass. at 391
    , 398
    (individual voir dire for African-American defendant and
    Hispanic victim).    Rather, in murder cases involving individuals
    from different ethnic backgrounds, this court has left the
    determination whether individual voir dire on bias is warranted
    "to the sound discretion of the trial judge."    
    Hunter, supra
    .
    26
    Prior to trial, the defendant requested that the judge
    individually ask each prospective juror five questions related
    to racial or ethnic bias.   Among them was the following: 10
    9F
    "The defendant in this case . . . is a Hispanic male, and
    the victim in this case is a white male. Would those facts
    in any way interfere with your ability to render a fair and
    just verdict?" 11
    10F
    Although we have not mandated such questioning, where the
    defendant and the victim are of different ethnic backgrounds, we
    nonetheless have "encourage[d]" trial judges to conduct
    individual voir dire to detect prejudice based on ethnic
    considerations.   See De La 
    Cruz, 405 Mass. at 274
    .   Yet the
    distinction between race and ethnicity, and, correspondingly,
    between that which we "require" and that which we "encourage,"
    rests on an increasingly shaky foundation.   Indeed, the Federal
    courts do not attempt to distinguish between race and ethnicity
    for purposes of juror voir dire.   They operate under "a broader
    10 The defendant argued that it was necessary to ask this
    question in an individualized setting because "it's not until
    you start doing the individual voir dire that you get behind
    some of these questions, and people really come up and say to
    you, 'Well, I have this bias . . . Well, yeah; I did have this
    experience back in 19- whatever, and so I do have a bit of a
    prejudice against. . . .'"
    11 Question thirteen of the specifically-drafted juror
    questionnaire asks:
    "The defendant in this case is a Hispanic male. The victim
    is a white male. Would the fact that the defendant is
    Hispanic in any way interfere with your ability to render a
    fair and just verdict?"
    27
    rule" applying to "'ethnic,' as well as racial, groups." 12
    1F   See
    
    Young, 401 Mass. at 398
    n.8.   See also Rosales-Lopez, 451 U.S.
    12"[I]n our heterogeneous society the [Federal] courts have
    found the boundaries of race and ethnicity increasingly
    difficult to determine," McCleskey v. Kemp, 
    481 U.S. 279
    , 316
    n.39 (1987), and have noted the futility of attempting to define
    "ethnicity." Rico v. Leftridge–Byrd, 
    340 F.3d 178
    , 183 (3d Cir.
    2003) ("What, though, does 'ethnicity' and 'ethnic origin'
    mean . . . . And how does one define 'race' when the
    understanding of 'race' itself has changed over the
    centuries?"). See Rosales-Lopez v. United States, 
    451 U.S. 182
    ,
    194 (1981) (Rehnquist, J., concurring) ("knowing the
    contentiousness of our profession," it is unlikely that "precise
    definition of . . . 'different racial or ethnic groups' will
    ever be arrived at"); Suri v. Foxx, 
    69 F. Supp. 3d 467
    , 479 n.9
    (D.N.J. 2014) ("Ethnicity does not have a clear definition in
    the law, and there is variation in how the terms 'race' and
    'ethnicity' are used").
    For purposes of discrimination under the Federal Equal
    Rights law, 42 U.S.C. § 1981, for example, Federal courts have
    defined "racial discrimination" as encompassing discrimination
    based on "ancestry or ethnic characteristics" (citation
    omitted). Village of Freeport v. Barrella, 
    814 F.3d 594
    , 604-
    605 (2nd Cir. 2016). For purposes of the Sixth Amendment right
    to a jury of one's peers, a defendant is entitled to a jury that
    fairly represents "distinctive groups" in the community. United
    States v. Garcia, 
    991 F.2d 489
    , 491 (8th Cir. 1993). See 
    id., quoting United
    States v. Black Bear, 
    878 F.2d 213
    , 214 (4th Cir.
    1989) ("A group of people is distinct when they have a shared
    attribute that defines or limits their membership, and when they
    share a community of interest"). In 2016, the United States
    Court of Appeals for the Second Circuit observed that the
    "confusion in unraveling the legal definitions of 'race' and
    "Hispanic'" has occurred since the distinction was first
    recognized by the United States Office of Management and Budget
    in 1977. See Village of Freeport, supra at 602 & n.13.
    In light of this, the United States Supreme Court has held,
    under its supervisory power, that a defendant charged with a
    "violent crime" who requests individual voir dire on the
    question of membership in "different racial or ethnic groups" is
    entitled to such questioning. 
    Rosales-Lopez, 451 U.S. at 192
    .
    Although ethnic distinction, and, for that matter, racial
    28
    at 192 ("[F]ederal trial courts must make [an individualized]
    inquiry when requested by a defendant accused of a violent crime
    and where the defendant and the victim are members of different
    racial or ethnic groups").
    As the United States Supreme Court observed in 1981, when
    crafting its supervisory rule, "It remains an unfortunate fact
    in our society that violent crimes perpetrated against members
    of other racial or ethnic groups often raise such a possibility
    [that prejudice would influence the jury]."   
    Rosales-Lopez, supra
    at 192.   Although trial judges may be understandably
    hesitant to introduce notions of racial or ethnic bias into
    their court rooms, "[w]e think that it would be far more
    injurious to permit it to be thought that persons entertaining a
    disqualifying prejudice were allowed to serve as jurors and that
    inquiries designed to elicit the fact of disqualification were
    barred" (citation omitted).   See 
    Rosales-Lopez, supra
    at 191.
    This court previously has declined to follow the Federal
    rule, and has done so using language that causes modern readers
    dismay, and in a manner that is neither prudent nor accurate.
    Thirty years ago, in De La 
    Cruz, 405 Mass. at 273
    , we concluded
    distinctions, may not be clear in every case, prior to voir
    dire, it is left to "the defendant to resolve this conflict by
    making the determination of whether or not he would prefer to
    have the inquiry into racial or ethnic prejudice pursued." See
    
    id. at 191.
                                                                         29
    that individual voir dire was not necessary where a Hispanic
    defendant was charged with sexually assaulting a Caucasian
    victim.   In doing so, we stated that our rule "implies that
    Hispanic persons are not members of the black (Negro) race,"
    but, rather, could be viewed as "members of the white race,"
    such that there was no racial difference between the Hispanic
    defendant and the Caucasian victim.   
    Id. Ten years
    later, in
    
    Pina, 430 Mass. at 72-74
    , we determined that a Cape Verdean
    defendant charged with murdering a Portuguese victim similarly
    was not entitled to individual voir dire concerning prejudice.
    To reach that conclusion, this court relied upon the proposition
    that "the term 'race' reflects the historical division of
    humanity by physical characteristics into three primary
    divisions:   Caucasian, Mongolian, & Negro."   
    Id. at 73
    n.15,
    citing De La Cruz, supra at 272.   We have not addressed the
    issue since.
    We recognize that the distinctions described in these cases
    retain little purchase in today's society.     Specifically, over
    the past few decades, the nation's landscape has changed
    dramatically with respect to its Hispanic population.    More than
    half of the country's population growth between 2000 and 2010
    was attributable to an increase in the Hispanic population. 13 12F   In
    13See Overview of Race and Hispanic Origin: 2010, U.S.
    Department of Commerce, Economics and Statistics Administration,
    30
    Massachusetts, an increase in the Hispanic population accounts
    for the entirety of the State's population growth in that same
    period. 1413F   Indeed, the Commonwealth now relies on the category of
    "Hispanic," in addition to "African-American," "Caucasian," and
    "Asian," in determining such things as the probabilities of DNA
    matches.        See, e.g., Commonwealth v. Seino, 
    479 Mass. 463
    , 469
    (2018); Commonwealth v. Diaz, 
    478 Mass. 481
    , 486 (2017);
    Commonwealth v. Broom, 
    474 Mass. 486
    , 488 & nn.3, 4, 5, 6
    (2016).
    The growing Hispanic and Latino population, in turn, has
    encountered varied sources of discrimination.       See, e.g.,
    Commonwealth v. Buckley, 
    478 Mass. 861
    , 878 (2018) (Budd, J.,
    concurring) (Hispanic drivers are stopped more often by police
    than Caucasian drivers); Bradley v. Lynn, 
    443 F. Supp. 2d 145
    ,
    148, 149 (D. Mass. 2006) (finding disparate and adverse impact
    on Hispanic candidates for entry-level fire fighter positions);
    Kane v. Winn, 
    319 F. Supp. 2d 162
    , 179 (D. Mass. 2004) (citing
    statistics that Latinos are overrepresented in country's prison
    U.S. Census Bureau 3 (2011), https://www.census.gov/prod
    /cen2010/briefs/c2010br-02.pdf [https://perma.cc/6QQH-Z227]
    (comparing 2000 census to 2010 census).
    14See Passel, Cohn, & Lopez, Hispanics Account for More
    than Half of Nation's Growth in Past Decade, Overview, Pew
    Research Center (Mar. 24, 2011), http://www.pewhispanic.org
    /2011/03/24/hispanics-account-for-more-than-half-of-nations-
    growth-in-past-decade/ [https://perma.cc/8XL6-DVUA].
    31
    population, and "Latino youths are incarcerated at twice the
    rate of [Caucasian] American youths").
    This type of discrimination poses no less a problem in the
    context of jury trials.   Indeed, research has shown that people
    of Hispanic and Latino descent -- not unlike African Americans -
    - are more likely to be treated severely by juries when accused
    of killing a Caucasian victim.    See, e.g., Race, Ethnicity, and
    Culture in Jury Decision Making, 11 Ann. Rev. L. & Soc. Sci.
    269, 272-273 (2015) (jurors more likely to recommend capital
    punishment for African-American or Latino defendants accused of
    killing Caucasian victims).   Concurring in De La 
    Cruz, 405 Mass. at 276
    , Chief Justice Liacos wrote that "[p]eople's prejudices
    do not . . . fit into categories formulated by Webster's
    Dictionary."   Rather, he observed that "[w]e have recognized
    previously, under the Declaration of Rights of the Constitution
    of the Commonwealth, the threat that bias toward ethnic groups
    presents to a fair trial."    
    Id. at 276
    (Liacos, C.J.,
    concurring).
    "Nothing in the statute" on which we based our decision in
    
    Young, 401 Mass. at 398
    , "requires us to limit the voir dire
    requirement to racial prejudice" rather than to include ethnic
    32
    prejudice.   De La 
    Cruz, 405 Mass. at 276
    (Liacos, C.J.,
    concurring).   Indeed, G. L. c. 234A, § 67A, 15 provides:
    14F
    "To determine whether a juror stands indifferent in the
    case . . . [with respect to] preconceived opinions toward
    the credibility of certain classes of persons . . . the
    court shall, or the parties or their attorneys may, with
    the permission and under the direction of the court,
    examine the juror specifically with respect to such
    considerations, attitudes, exposure, [and] opinions. . . ."
    "The statute includes within its scope prejudices against
    identifiable classes of individuals, including Hispanic
    persons."    De La 
    Cruz, 405 Mass. at 276
    (Liacos, C.J.,
    concurring).    See art. 1 of the Massachusetts Declaration of
    Rights ("Equality under the law shall not be denied or abridged
    because of . . . race . . . or national origin").    See, e.g.,
    Commonwealth v. Long, 
    419 Mass. 798
    , 807 n.9 (1995) ("both
    racial and ethnic groups are discrete groups protected under
    art. 1"); Commonwealth v. Aponte, 
    391 Mass. 494
    , 503–504 (1984)
    (addressing underrepresentation of Hispanic people on grand jury
    venires).    There is no principled reason why a Hispanic
    defendant charged with murdering a Caucasian victim should be
    entitled to fewer protections against potential bias than an
    African-American defendant in the same position.
    15 Our prior jurisprudence applied G. L. c. 234, § 28, as
    amended by St. 1985, c. 463. In 2016, that statute was replaced
    with G. L. c. 234A, § 67A, inserted by St. 2016, c. 36, § 4.
    The language as to this provision is virtually identical in both
    statutes.
    33
    Of course, attorneys seeking to ask questions about ethnic
    bias would now have some leeway to do so during attorney-
    directed voir dire, which was not available to defense counsel
    at the time of the defendant's trial.   See, G. L. c. 234A,
    § 67D, inserted by St. 2016, c. 36, § 4.      Nonetheless, this
    questioning occurs within guidelines and limitations established
    by the judge, and does not provide a clear, consistent,
    authoritative, and reliable means of detecting bias among
    potential jurors in the way that mandatory questioning by the
    trial judge, upon request, would assure.
    Indeed, the value of individual voir dire to uncover
    potential ethnic bias was evident in the empanelment proceedings
    in this case.   A least one potential juror identified in her
    written questionnaire that the knowledge that the defendant was
    Hispanic would interfere with her ability to be fair and
    impartial.   After the judge conducted voir dire concerning the
    juror's response, he found that she would not be able to be
    impartial and excused her.   Another juror's ethnic bias,
    however, only came to the fore after answering individual voir
    dire questions, where the potential juror had marked "no" to the
    relevant question on the questionnaire. 16
    15F
    16Juror no. 10 acknowledged having formed an opinion about
    the case. Called to individual voir dire and asked to specify,
    the juror responded,
    34
    Of course, in many cases, ethnicity remains unlikely to be
    a source of bias in a murder trial, particularly where it is
    difficult for jurors to distinguish between the ethnicities of
    the defendant and the victim.   See generally Commonwealth v.
    Bastaldo, 
    472 Mass. 16
    , 28-30 (2015) (discussing difficulties of
    distinguishing ethnic differences in some circumstances).     In
    such cases, a reasonable defense attorney would likely have no
    reason to request individual voir dire on ethnic bias.    In light
    of the changes in our society since this court last addressed
    the issue, however, it is difficult to say now that the question
    of possible ethnic bias toward members of the Hispanic community
    can be set aside as not constituting "racial" bias; for
    instance, descriptions of suspects provided to police often now
    are stated as "light-skinned Hispanic male," Commonwealth v.
    Nelson, 
    468 Mass. 1
    , 5 (2014), or "dark-skinned Hispanic or
    Juror no. 10:   "What is on his head?   What's that thing on
    his head?"
    The judge:   "It's an earphone."
    Juror no. 10:   "Does he not understand English?"
    The judge:   "Right.   His native language is Spanish."
    Juror no. 10: "Yeah -- that's . . . he's an American
    citizen, and he can't understand and speak English, so
    that's why I've formed an opinion."
    The juror was excused.
    35
    light-skinned African–American," Commonwealth v. Cavitt, 
    460 Mass. 617
    , 619 (2011).
    Therefore, as a matter of our supervisory power, in cases
    of murder, sexual offenses against children, and rape, decided
    after the issuance of the rescript in this case, we extend the
    principle announced in 
    Young, 401 Mass. at 398
    ; 
    Hobbs, 385 Mass. at 873
    ; and 
    Sanders, 383 Mass. at 640
    , and require that, where a
    defendant facing trial on such a charge requests individual voir
    dire on the issue of racial or ethnic prejudice, and the
    defendant and the victim are of different such backgrounds, that
    request should be granted. 17
    16F
    "In prior cases announcing new rules or requirements in the
    exercise of our superintendence power, we have declined to give
    the new rule or requirement retroactive effect."   Commonwealth
    v. Dagley, 
    442 Mass. 713
    , 720–721 (2004), cert. denied, 
    544 U.S. 930
    (2005).   See Commonwealth v. Ramos, 
    31 Mass. App. Ct. 362
    ,
    366 (1991) ("all previous extensions of the Sanders rule have
    17We do not at this time expand the categories of crimes
    which, as a matter of law, require individual voir dire with
    respect to racial or ethnic bias. See, e.g., Commonwealth v.
    Grice, 
    410 Mass. 586
    , 589 (1991) (declining to expand rule to
    include armed robbery). Where other crimes are at issue, the
    decision to conduct individual voir dire remains within the
    sound discretion of the trial judge. Nothing in this decision,
    however, should be read to discourage judges from conducting
    individual voir dire on racial or ethnic bias, regardless of the
    crime charged. Nor do we mean to suggest that individual voir
    dire on the question of racial or ethnic bias should not be
    conducted at sidebar. See 
    Dyer, 460 Mass. at 738
    .
    36
    been prospectively applied").    Accordingly, the rule we announce
    today shall be applied in cases tried after the issuance of the
    rescript in this case, and not to the defendant's case.     See,
    e.g., Commonwealth v. King, 
    445 Mass. 217
    , 248 (2005), cert.
    denied, 
    546 U.S. 1216
    (2006) (prospectively applying new first
    complaint doctrine).
    Under our jurisprudence at the time the defendant's case
    was tried, in the absence of a "substantial risk" of ethnic
    bias, the choice to conduct individual voir dire on the question
    of ethnic bias was left to the discretion of the trial judge.
    See 
    Hunter, 427 Mass. at 654
    .    The Commonwealth did not argue
    that the defendant's ethnicity was "a possible motive for the
    killing, or otherwise informed the evidence."    See 
    Pina, 430 Mass. at 74
    .   The defendant was identified by witnesses who knew
    him; he was not made a suspect on the basis of his ethnic
    characteristics.   See 
    id. Accordingly, we
    are confident that
    the judge correctly determined that there was no substantial
    risk of bias related to ethnicity.    Thus, it was within the
    judge's discretion to deny the request for individual voir dire.
    d.   Consent to search.     As stated, prior to trial, the
    defendant moved to suppress statements and evidence recovered
    during a police search of his residence.    The motion judge
    allowed the motion to suppress the statements, after he found
    that the Miranda warnings were inadequate, but denied the motion
    37
    to suppress evidence.   He concluded that some of the evidence
    had been seized pursuant to a "consent search" and some of the
    evidence was seized during a second search, with a warrant; the
    warrant affidavit did not rely on or even mention any of the
    evidence seized during the warrantless search.
    On the day after the victim's body was discovered, police
    brought the defendant to the police station for questioning.     At
    that time, the defendant was twenty-one years old; he could not
    read English, and he had a limited understanding of spoken
    English.   Accordingly, a police officer was brought in to
    translate from English to Spanish.   The officer read from a
    Miranda rights card, written in English, which he attempted to
    translate into Spanish.   The officer advised the defendant of
    his Miranda rights as follows:
    "These are your Miranda rights. Before we begin I
    have to read this to you, ok? They're in English, I'm
    going to read it for you in Spanish, but back here
    where you sign it's going to be in English. You
    understand? Ok. Before they, we ask you any
    question, you can stay quiet. You have right to
    silence. Uh, every little thing that you say we can
    use it in court. You have a right to talk to a lawyer
    before we ask you something. If you cannot pay for a
    lawyer the court gives you a lawyer without paying
    anything. If you want to talk to us without a lawyer
    here, you can stop when you want, without a lawyer.
    So if you want to talk to us and you want to stop,
    well that is your right, you want to talk and say
    nothing, to be looking for a lawyer. You understand?
    Ok."
    38
    Following this interpretation of his Miranda rights, the
    defendant agreed to speak with the officers.     He denied any
    involvement in the victim's death.
    Later in the interview, police requested the defendant's
    consent to search his residence.     They presented him with a
    consent to search form, printed in English, which the officer
    again attempted to explain in Spanish.     The officer did not
    provide a verbatim oral recitation of the language on the form,
    but he did tell the defendant that if he did not want to sign
    the form, "you don't sign it."     The defendant ultimately signed
    the form.
    Police searched the house where the defendant had been
    staying.    They seized various items of clothing from an area of
    the living room where he had been sleeping and keeping his
    belongings. 18
    17F   Officers then obtained a search warrant, returned
    to the residence, and seized additional items.     A pair of blue
    jeans with a yellow stain on the ankle was located under the
    couch in the living room.     Due to an error in the evidence log,
    it is unclear whether the jeans were seized during the first
    search or the second search.
    18The defendant had come to Massachusetts from Puerto Rico
    approximately one month earlier and had been staying at his
    uncle's house.
    39
    On appeal, the defendant argues that the judge erred in
    denying the motion to suppress the evidence seized, because the
    Commonwealth did not show that the defendant freely and
    voluntarily consented to the search, and the evidence seized
    pursuant to the later warrant should have been suppressed as the
    fruit of the poisonous tree.   The motion judge found that the
    defendant's affidavit was limited, however, to the contention
    that, had he "understood [his] rights under Miranda, [he] would
    not have signed the consent form."   The defendant's appellate
    counsel concedes that the defendant "did not raise" any other
    issues regarding the consent form in Superior Court.
    "The theory on which a motion to suppress is presented in
    the trial court cannot be changed when the motion comes before
    this court for review."   Commonwealth v. Pina, 
    406 Mass. 540
    ,
    542, cert. denied, 
    498 U.S. 832
    (1990).   As the motion judge
    noted, quoting Commonwealth v. Costa, 
    65 Mass. App. Ct. 227
    ,
    231-232 (2005), "[a] Miranda-like warning is not a necessary
    prerequisite to a valid consent [to search] under the Fourth
    Amendment [to the United States Constitution] or under art. 14
    [of the Massachusetts Declaration of Rights]."
    Even if the question of voluntariness were to be
    considered, there was no error.   The Commonwealth bears the
    burden of proving that consent was freely and voluntarily given.
    See Commonwealth v. Krisco Corp., 
    421 Mass. 37
    , 46 (1995).
    40
    Consent is free and voluntary where it is "unfettered by
    coercion, express or implied," and must be more than mere
    "acquiescence to a claim of lawful authority" (citations
    omitted).    
    Id. The failure
    to inform a defendant of the right
    to withhold consent is a relevant consideration, but not
    necessarily dispositive.     See Commonwealth v. Carr, 
    458 Mass. 295
    , 302 (2010).     A voluntariness determination requires a
    consideration of the totality of the circumstances.
    Commonwealth v. Rogers, 
    444 Mass. 234
    , 242 (2005).
    While the motion judge found that the officer who presented
    the defendant the consent form was unable to give "a verbatim
    recitation of the language [on that form]," 19 the judge found
    18F
    further that the translation was sufficient to permit free and
    voluntary consent.     He observed that consent to search need only
    be "free and voluntary," not "knowing and intelligent"; that the
    defendant was informed of his "right to refuse consent"; and
    that there was no trickery or coercion in the police conduct.
    The motion judge's determination is supported by the
    record.     Although some warnings contained on the printed English
    form were not conveyed, the translation of the form included the
    key information that the police were asking to search the
    19At the hearing on the motion to suppress, the officer
    testified that he was unable "to read that [form] verbatim to
    [the defendant]" in Spanish, in part because some of the words
    "exceed[ed his] comfort level."
    41
    defendant's residence and that, by signing the form, the
    defendant was giving them permission to do so.    There was no
    evidence that the defendant's will was overborne.    The judge's
    finding that the defendant's consent was free and voluntary thus
    was not clearly erroneous. 20
    19F
    e.   Admission of out-of-court statements.   The defendant
    claims that the judge erred in allowing a police investigator to
    testify to double hearsay evidence in two instances.    Because
    the defendant objected at trial, we review to determine whether
    the introduction of the testimony was error and, if so, whether
    it was prejudicial.    See Commonwealth v. Sullivan, 
    478 Mass. 369
    , 375-376 (2017).   "An error is not prejudicial if it 'did
    not influence the jury, or had but very slight effect'"
    20The officer's inability to convey a precise and complete
    translation nonetheless is concerning. Although the incomplete
    translation proved sufficient in this instance, the additional
    warnings included on the English version of the form -- which
    the officer did not translate -- doubtless have some value.
    That non-English speaking defendants should receive fewer
    warnings in their interactions with the police runs counter to
    our long-standing principles of equal treatment and access to
    justice. See generally Bridgeman v. District Attorney for the
    Suffolk Dist., 
    476 Mass. 298
    , 311-312 (2017) (noting defect in
    Commonwealth's Spanish translation of notice to criminal
    defendants); Commonwealth v. Siny Van Tran, 
    460 Mass. 535
    , 561
    (2011) (waiver of right against self-incrimination invalid where
    Chinese translation "fell measurably below what would be
    required to impart the substantive meaning of the right").
    This could be avoided if care were taken to provide proper
    translation. Indeed, as the translating officer indicated, "If
    [the form] was given to me in Spanish, I could have gone through
    it with him in Spanish."
    42
    (citations omitted).    Commonwealth v. Cruz, 
    445 Mass. 589
    , 591
    (2005).
    At trial, the defendant employed a Bowden defense, see
    Commonwealth v. Bowden, 
    379 Mass. 472
    , 486 (1980); he argued
    that Cruz had killed the victim, and that the police had failed
    properly to investigate Cruz's actions.    A Bowden claim refers
    to defendants' "right to base their defense on the failure of
    police adequately to investigate [the crime] in order to raise
    the issue of reasonable doubt as to the defendant's guilt in the
    minds of the jury" (citation omitted).    See Commonwealth v.
    Avila, 
    454 Mass. 744
    , 753 (2009).    We discern no error in
    permitting the testifying officer to rebut the defendant's
    Bowden defense by testifying to out-of-court statements that
    affected the conduct of the police during the course of the
    investigation.
    Through a State trooper, the defendant presented evidence
    that, according to an internal police report, "[A]fter an
    exhaustive investigation, investigators were able to determine
    that Cruz was responsible for the death of [the victim]."     On
    cross-examination, the prosecutor asked the trooper about
    statements made to him during interviews he had conducted with
    several witnesses.     In one statement, the defendant told his
    cousin Maria that he had "smashed" the victim in the head with a
    big rock and stabbed him five times.     Maria thereafter repeated
    43
    the defendant's words to one of her friends.   The friend
    ultimately repeated the statements to the officer.     In a second
    statement, the defendant told his girlfriend that he had killed
    someone, and pointed out the location of the body.     His
    girlfriend repeated the defendant's statement to one of her
    friends, who, in turn, relayed the statements to the
    investigator.
    The defendant objected to the admission of these statements
    on grounds of hearsay, double hearsay, and prejudice.        Noting
    that, in the context of a Bowden defense, the statements are
    admissible for a purpose other than their truthfulness, the
    judge overruled the objections.   The judge gave detailed
    limiting instructions immediately before and immediately after
    the officer presented this testimony, and explained to the jury
    that the statements were not being offered for their truth but,
    rather, to show that the police had been presented with the
    information at the time they were deciding which suspects to
    investigate.
    If a defendant raises a Bowden defense, our "cases make
    clear that . . . the Commonwealth has the right to rebut it."
    
    Avila, 454 Mass. at 753
    .   A Bowden defense, therefore, is "a
    two-edged sword for the defendant, because it opens the door for
    the Commonwealth to offer evidence explaining why the police did
    44
    not follow the line of investigation suggested by the defense."
    Commonwealth v. Silva-Santiago, 
    453 Mass. 782
    , 803 n.25 (2009).
    "[T]he presentation of a Bowden defense can expand the
    usual evidentiary boundaries quite significantly," and can
    permit introduction of evidence that "otherwise [would not] be
    admitted on hearsay or relevance grounds."     
    Avila, 454 Mass. at 757
    .   The permissible scope of rebuttal evidence depends, in
    part, on the issues raised by the defense; "the more wide-
    ranging the defendant's attack on the police investigation, the
    broader the Commonwealth's response may be."     
    Id. at 754–755.
    Prior to trial, trial counsel argued that out-of-court
    statements of Cruz that "border[ed] on an admission" should be
    admitted in light of the Bowden defense.     The statements were
    then introduced at trial.    By the same token, the fact that the
    police had been informed of competing admissions, which instead
    implicated the defendant, permissibly could be introduced as
    rebuttal, to help the jury understand why the police focused on
    the defendant rather than on Cruz.    "[T]he Commonwealth was
    entitled to elicit testimony about why the investigators chose
    the particular investigative path they did, including the
    reasons they ultimately accepted and acted on . . . information
    that the defendant was the person who [killed] the victim."
    
    Avila, 454 Mass. at 755
    .
    45
    Nor do we think that the judge abused his discretion in
    determining that the probative value of the testimony was not
    substantially outweighed by its prejudicial effect.         See
    Commonwealth v. Sylvia, 
    456 Mass. 182
    , 192 (2010) (balancing
    probative value and prejudicial effect "are matters entrusted to
    the trial judge's broad discretion and are not disturbed absent
    palpable error" [citation omitted]).         The quantity of statements
    to which the officer testified was not excessive.         Contrast
    Commonwealth v. Lodge, 431 Mass 461, 467 (2000) ("a general
    expression of the officer's opinion of guilt, followed by a
    recital of all the evidence against the defendant, is not
    permitted").        Moreover, the jury already had heard much of the
    substance of the testimony through Maria and the defendant's
    girlfriend, who had described the defendant's statements in
    detail. 2120F
    f.         Ineffective assistance of counsel.   The defendant
    contends that his trial counsel was ineffective for failing to
    move to suppress the jeans seized from the defendant's residence
    on the ground of improper documentation in the chain of custody.
    Police testified that the jeans were recovered during a search
    21The defendant argues also that it was error to permit the
    trooper to opine as to the defendant's guilt. Had the trooper
    done so, there might have been error. The trooper testified,
    however, that the evidence led his investigation "to focus on
    [the defendant]," as opposed to other suspects.
    46
    of the defendant's residence, and were placed in a bag labeled
    "22."   The evidence log, however, contained only twenty-one
    entries, and did not reflect that jeans had been found and
    bagged at the scene.    The log indicated that other items of
    clothing were seized both during the consent search and, later,
    during the search pursuant to the warrant.
    When evaluating a claim of ineffective assistance of
    counsel in a case of murder in the first degree, we apply the
    standard of G. L. c. 278, § 33E, to determine whether there was
    a substantial likelihood of a miscarriage of justice.
    Commonwealth v. Wright, 
    411 Mass. 678
    , 682 (1992), S.C., 
    469 Mass. 447
    (2014).    In doing so, we determine whether there was
    an error in the course of trial, and, if so, whether it was
    likely to have influenced the jury's conclusion.     
    Id. Where the
    basis of the claim is counsel's failure to file a motion to
    suppress, "the defendant has to demonstrate a likelihood that
    the motion to suppress would have been successful."    See
    Commonwealth v. Comita, 
    441 Mass. 86
    , 91 (2004).
    In this case, counsel moved, unsuccessfully, to suppress
    the jeans on other grounds.    Moving to suppress the jeans on the
    additional basis that they were improperly labeled was unlikely
    to have succeeded.     "Defects in the chain of custody of
    otherwise admissible evidence go to the weight of the evidence,
    as opposed to the admissibility of the evidence."     Commonwealth
    47
    v. Miller, 
    475 Mass. 212
    , 228 (2016).   See Commonwealth v.
    Jones, 
    42 Mass. App. Ct. 378
    , 380–381 (1997) (counsel not
    ineffective despite failing to object notwithstanding weakness
    in chain of custody).
    g.   Relief pursuant to G. L. c. 278, § 33E.   Pursuant to
    our duty under G. L. c. 278, § 33E, we have reviewed the entire
    record carefully, and discern no reason to use our extraordinary
    power to reduce the verdict or to order a new trial.
    Judgment affirmed.