Troy D. Richardson v. United States ( 2014 )


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    DISTRICT OF COLUMBIA COURT OF APPEALS
    No. 11-CF-755
    TROY D. RICHARDSON, APPELLANT,
    v.
    UNITED STATES, APPELLEE.
    Appeal from the Superior Court
    of the District of Columbia
    (CF1-11069-09)
    (Hon. Gerald I. Fisher, Trial Judge)
    (Argued December 5, 2013                             Decided August 28, 2014)
    Edward F.C. Gain, Jr. for appellant.
    Peter S. Smith, Assistant United States Attorney, with whom Ronald C.
    Machen Jr., United States Attorney, and Elizabeth Trosman, Elizabeth H. Danello,
    Laura Bach, and Melinda Williams, Assistant United States Attorneys, were on the
    brief, for appellee.
    Before FISHER and BLACKBURNE-RIGSBY, Associate Judges, and BELSON,
    Senior Judge.
    BELSON, Senior Judge:      Troy Richardson appeals from a judgment of
    conviction of voluntary manslaughter while armed and carrying a dangerous
    2
    weapon (prior felon) (CDW).1 He contends that the trial court abused its discretion
    both in excluding evidence that supported his self-defense claim and in admitting
    evidence that, in the months and years before the stabbing, he regularly used PCP,
    and that the drug caused him to behave bizarrely. We agree that the trial court
    erroneously exercised its discretion in excluding certain evidence that supported
    Richardson‘s self-defense claim, that the error was not harmless, and that reversal
    is therefore required. Richardson does not mention the CDW conviction in his
    appeal brief, but because a finding that Richardson acted in self-defense would
    control the resolution of the CDW conviction,2 we conclude that a new trial on
    both charges is appropriate.
    The trial that we order today will be Richardson‘s third on these two
    charges. On January 8, 2010, Richardson was charged by indictment with first-
    1
    D.C. Code §§ 22-2105, -4502, -4504 (a) (2012 Repl.).
    2
    D.C. Code § 22-4504 (a) (2001). Self-defense is a defense to a CDW
    charge for a person who is not carrying the weapon before the danger arises. See,
    e.g., Mack v. United States, 
    6 A.3d 1224
    , 1229-30 (D.C. 2010) (―[We have] long
    recognized that one is not guilty of carrying an unlicensed gun during the period it
    is actually used in self-defense. However, this doctrine is inapplicable where one
    anticipating harm carries a pistol in public for a period of time before the actual
    danger arises.‖ (internal quotation marks and citations omitted)).
    3
    degree murder while armed3 and CDW in the May 17, 2009, stabbing of Tyrone
    Wheaton. On September 17, 2010, a jury found Richardson not guilty of first-
    degree and second-degree murder while armed, but was unable to reach a verdict
    on the charges of voluntary manslaughter while armed and carrying a dangerous
    weapon, and the court declared a mistrial. On April 6, 2011, a second jury found
    Richardson guilty of those charges.    As we will explain, the first jury heard
    evidence that Richardson had ―snitched‖ on Wheaton and his family, and that
    Richardson believed that Wheaton knew that he had done so. The trial court did
    not allow Richardson to present most of this evidence to the second jury, ruling
    that Richardson‘s speculation about what Wheaton believed was not relevant.4
    Because Richardson‘s self-defense claim was premised substantially on his own
    reasonable perceptions about what was happening between Wheaton and him, and
    because evidence that Richardson snitched on Wheaton and his family was
    relevant to whether his fear of imminent death or serious bodily harm at Wheaton‘s
    3
    D.C. Code § 22-2101 (2012 Repl.).
    4
    The first jury heard this ―snitch‖ evidence, but only because the
    government ―opened the door‖ to it during the first trial by asking Richardson why
    he didn‘t tell the police that Wheaton‘s brother had given him drugs that morning,
    allowing him to explain that he had already told police that Wheaton‘s family was
    selling drugs from their apartment. Although the jury heard this evidence, trial
    counsel did not argue or explain its relevance at closing.
    4
    hands was reasonable, Richardson should have been permitted to present this
    evidence to the jury.
    I.
    In the early evening of May 17, 2009, police responded to a 911 call from
    2424 Elvans Road in Southeast, D.C., and found Tyrone Wheaton lying motionless
    and nonresponsive in the doorway to apartment 203, where he lived. The Chief
    Medical Examiner for the District of Columbia, who performed an autopsy on
    Wheaton, testified that he died from acute blood loss from a stabbing that
    punctured his aorta and left a wound seven to eight inches deep.
    Earlier that afternoon, Wheaton had brought his girlfriend and their two
    sons, then twelve and thirteen, to dinner at his apartment, where he had lived for
    some years with his mother, Deborah Sparks, and two siblings.             Appellant
    Richardson, another long-time resident, lived across the hall in apartment 202.
    According to Deontrae Ingram, a sixteen year-old neighbor, Richardson was
    outside on the porch in front of 2424 Elvans Road that afternoon smoking a
    ―dipper‖ (a tobacco or marijuana cigarette dipped in PCP) when Wheaton
    5
    approached him. The two fought,5 and a crowd gathered to watch. Ingram, the
    only member of that crowd to testify, said that after the fight Wheaton returned to
    his apartment, and Richardson ran up the stairs after him, yelling, ―I‘m a kill you
    bitch, I‘m a kill you.‖
    Ingram continued inside to an inner stairwell which gave him a view of the
    landing between Richardson‘s and Wheaton‘s apartments. He said that while
    Wheaton was standing in the hallway between apartments 202 and 203 talking to
    his mother, Richardson ―peeked‖ out of his door, then stepped out into the hallway
    and punched Wheaton.
    Deborah Sparks, Wheaton‘s mother, had been inside apartment 203 that
    afternoon preparing dinner, and she testified that Wheaton went outside the
    building briefly and returned a few minutes later, appearing upset, and then went
    into the hallway. Hearing a commotion in the hall, she went to her apartment
    doorway. She heard Richardson say, ―call the police, call the ambulance, because
    he‘s about to die.‖ She then saw Richardson emerge from his apartment, stab
    5
    Testimony left it unclear who started the fight.
    6
    Wheaton, and quickly return to his apartment.6 Wheaton‘s sister, Jessica Sparks,
    who also lived in apartment 203, said that she was returning home when she heard
    about the stabbing from a neighbor, at which point she ran up the stairs, retrieved a
    yellow and black crowbar that the family kept in the living room, and banged on
    Richardson‘s door with it.
    Wheaton‘s sons were called by the defense. They saw the events from the
    living room of apartment 203, which gave them a partial view into the hallway.7
    At trial, one son testified that after Richardson, unarmed, took a swing at Wheaton,
    Wheaton entered apartment 203, grabbed a yellow and black crowbar from the
    living room, and returned to the hallway. Richardson, then armed with a knife,
    swung at Wheaton and missed, and Wheaton swung the crowbar at Richardson. He
    did not see whether Wheaton hit Richardson with the crowbar. Richardson then
    backed up and took a third swing at Wheaton with the knife. The other son
    testified that he saw Wheaton, angry and yelling, grab the crowbar from behind the
    TV in the living room, and return to the hallway. He said that Richardson stabbed
    his father twice, and his father then walked back into apartment 203.
    6
    Another witness, a neighbor, gave a similar account of the events.
    7
    Their view of the hallway was obscured by a partial wall, and by their
    mother and grandmother who were standing in the doorway.
    7
    Richardson testified at trial, saying that Wheaton approached him when he
    was sitting on the porch outside 2424 Elvans Road that afternoon.8 He said that
    Wheaton ―came up the steps, stood over top of me. And I looked up and he said
    ‗You snitch-ass bitch.‘‖ Then Wheaton attacked him. Seeking safety, he went
    upstairs to his apartment. He said he was unlocking his apartment door when he
    heard a woman‘s voice say, ―kill his ass, kill his ass,‖ and he then felt ―something
    hard hit my back.‖9 Richardson said he grabbed a knife that was sitting on a ―half-
    wall‖ or a ledge by his door as Wheaton was trying to force his way into
    Richardson‘s apartment. He admitted to stabbing Wheaton with it. Afterward,
    Richardson said he returned to his apartment, locked the door, and stayed there for
    several hours.   During that time, according to Officer Kelan Edwards who
    responded to the 911 call, Richardson was listening to music and popping popcorn.
    Edwards testified that he banged on Richardson‘s door with his fist and with a
    baton, and identified himself as a police officer, only to hear a man‘s voice say,
    8
    Richardson said that he used cocaine and marijuana that day, but denied
    smoking a ―dipper.‖ He did admit to regular PCP use.
    9
    Richardson also said that Wheaton ―grabbed me and slammed me on the
    ground, pinned me down, began to choke me, smacked me, picked me up and try
    to throw me down the steps‖ outside, but officers who responded to the 911 call
    noticed no signs that Richardson had been injured, even though they asked him to
    turn around and lift his shirt. Nor did he claim to be injured.
    8
    ―get the fuck away from my door.‖ Richardson finally emerged only after police
    cut the power supply to his apartment.
    II.
    As the jury in Richardson‘s first trial learned, but the jury in the trial before
    us did not, the Sparks-Wheaton family occasionally sold drugs out of apartment
    203, and Richardson, a longstanding drug addict, was a regular buyer.
    Approximately six months before he stabbed Wheaton in May of 2009, Richardson
    informed police about drug sales from apartment 203. He spoke several times with
    Sergeant Yurell Washington of the Metropolitan Police Department, providing
    Wheaton‘s name and the make and license plate number of the car Wheaton drove.
    According to Richardson, after he spoke with Sergeant Washington, but well
    before the stabbing, police executed a search warrant at apartment 203 and arrested
    at least one family member for drug crimes on the basis of that search.10
    In the first trial, Richardson called as a witness Sergeant Washington, who
    confirmed that he spoke to Richardson several times by phone, and sent
    undercover investigators to the area based on Richardson‘s information, but that
    10
    In the first trial, Richardson indicated that apartment 203 was searched in
    November 2008, and the government also indicated in colloquy with the court
    during the second trial that there was a search of the apartment that fall.
    9
    information never ―panned out.‖ Sergeant Washington testified that he did not
    execute a warrant on apartment 203, and he heard about the executed warrant only
    from Richardson himself.
    This evidence came in during Richardson‘s first trial when his counsel asked
    him why he did not tell the police that he stabbed Wheaton in self-defense. He
    explained,
    I didn‘t feel comfortable with the two detectives . . .
    because I gave the police information—the Narcotic
    Division about narcotics being sold out apartment 203
    and when I first spoke with the Narcotic Detective I
    didn‘t want to give out my name because I didn‘t want
    my name leaked out because once you‘re known in the
    neighborhood as being a snitch its repercussions behind
    it.
    Richardson also explained that he never met with Sergeant Washington in
    person, because ―I didn‘t want to sign no papers to be—like I explained to you,
    your name gets leaked in the community as a snitch. Once you give information
    up, somehow, some way people find out that you‘re giving information up.‖
    At the outset of the second trial, the government moved to exclude as
    irrelevant Richardson‘s statements that he spoke to Sergeant Washington about
    10
    drug sales from apartment 203 months before the stabbing, that he believed that the
    search subsequently executed on that apartment was based on information he
    provided, and that Wheaton‘s brother sold him drugs the morning of the stabbing.
    Richardson opposed the motion, saying that the point of introducing the evidence
    was ―to just go with the whole idea that he was still trying to help the police and
    that his theory of why Tyrone Wheaton was coming after him was because the
    family had decided he was a snitch.‖ The court responded as follows:
    [Court]: But what would be your evidence of that?
    [Defense Counsel]: This was Mr. Richardson‘s –
    [Court]: That doesn‘t matter, though. That‘s not relevant
    on that issue, that he thought that they believed he was a
    snitch. I don‘t see how that has anything to do with who
    sold him the drugs or anything of that nature.
    ...
    [Defense Counsel]: Well, very well, you know, I‘ll keep
    away from that on direct, . . .
    [Court]: . . . And what about the search warrant issue,
    which is a little bit related to this?
    [Defense Counsel]: It‘s the same thing. It‘s related in
    Mr. Richardson‘s mind that he got – this attack was
    happening because of him cooperating with the police.
    We‘re not going to go into that. I won‘t go into it on
    direct.
    [Court]: Right, but Mr. Richardson needs to know that
    unless specific approval has been given for that subject
    matter, he can‘t testify. Even if you don‘t ask the
    11
    question, Mr. Richardson can‘t testify about that because
    it‘s not relevant without more.
    [Defense Counsel]: Very well.
    The court then went on to address Richardson directly, and in doing so
    expanded the scope of its ruling.
    [Court]: Mr. Richardson, . . . what you think people may
    have thought about you, just that view without more, is
    not relevant.     If you think somebody was doing
    something because you believe they had a particular
    thought, that‘s not relevant unless you can prove that, in
    fact, they did have that thought. . .
    ...
    [Defendant]: But that‘s part of the theory of my defense–
    [Court]: . . . [B]ut just because you think something was
    happening doesn‘t necessarily mean that you get to
    testify about it just because you want to make that part of
    your theory.
    Later, before he testified, Richardson asked the court directly whether he
    could explain why he thought Wheaton had attacked him. The court said that
    Richardson could testify that Wheaton called him a ―snitch-ass bitch‖ when they
    fought that afternoon, but he could not present his ―speculation about what Mr.
    Wheaton, why he might have been angry at you or what was going on in his mind
    12
    as opposed to what he said or did. And so what you might think he was thinking is
    not a proper topic for you to testify about.‖ The court explained that,
    [Court]: Well, but you see the problem with that, Mr.
    Richardson, is . . . you have to show a link between that
    and these events. Not that you think there‘s a link, but
    that there actually is a link.
    [Defendant]: Well, actually from the incident and me
    speaking with the police. Giving the police information
    about —
    [Court]: But that‘s not a sufficient link, in my view, . . .
    Thus, the trial court allowed Richardson to say that Wheaton called him a
    ―snitch-ass bitch‖ that afternoon, but it excluded (1) evidence that Richardson
    obtained drugs from Wheaton‘s brother the morning of the stabbing; (2) evidence
    that, months before the stabbing, Richardson spoke to police about drug sales from
    apartment 203 and that police executed a search warrant there; and (3) testimony
    by Richardson that he believed that Wheaton knew that he actually talked to the
    police.
    III.
    The trial court excluded this evidence (the ―snitch‖ evidence) as irrelevant.
    A trial court has broad discretion to make evidentiary rulings because of its
    13
    familiarity with the details of the case and expertise in evidentiary matters, and we
    review that ruling for abuse of discretion. (Markus) Johnson v. United States, 
    960 A.2d 281
    , 294 (D.C. 2008). When we review for abuse of discretion, we apply a
    five-part test in which we consider: ―(1) whether the decision at issue was
    committed to the trial court‘s discretion; (2) whether the trial court recognized that
    it had discretion and whether it purported to exercise it; (3) whether the record
    reveals sufficient facts upon which the trial court‘s determination was based . . . ;
    (4) whether the trial court . . . failed to consider a relevant factor [or] relied upon
    an improper factor, and whether the reasons given reasonably support the
    conclusion; and (5) whether the error, if any, was harmless.‖ Dawkins v. United
    States, 
    41 A.3d 1265
    , 1270 (D.C. 2012) (internal quotation marks omitted)
    (quoting 
    Johnson, 960 A.2d at 295
    ).
    Relevant evidence is evidence that ―tend[s] to make the existence or
    nonexistence of a fact more or less probable than would be the case without that
    evidence.‖ In re L.C., 
    92 A.3d 290
    , 297 & n.21 (D.C. 2014) (internal quotation
    marks, brackets, and citation omitted); accord Campos-Alvarez v. United States, 
    16 A.3d 954
    , 959-60 (D.C. 2011). The trial court enjoys particularly broad discretion
    in determining the relevance of a piece of evidence because the inquiry is fact-
    specific and proceeds under a flexible standard. United States v. Mosby, 
    495 A.2d 14
    304, 305 (D.C. 1985) (citing United States v. Kearney, 
    420 F.2d 170
    , 171 n.1 (D.C.
    Cir. 1969)).
    Our general rule is to grant broad deference to the trial court‘s determination
    of relevance, but we do not regard relevance as a particularly high bar for the
    proponent of the evidence to clear, see Street v. United States, 
    602 A.2d 141
    , 143
    (D.C. 1992), and we are more searching in our review of a ruling that a piece of
    evidence is irrelevant if the appellant makes a showing that it was central to his or
    her defense. Riddick v. United States, 
    995 A.2d 212
    , 216 (D.C. 2010) (―An
    evidentiary ruling . . . is a highly discretionary ruling that will be upset on appeal
    only upon a showing of grave abuse. But such discretion does not extend to the
    exclusion of crucial relevant evidence establishing a valid defense.‖ (quoting Price
    v. United States, 
    697 A.2d 808
    , 818 (D.C. 1997) (internal quotation marks and
    citations omitted))).
    It is undisputed that the trial court recognized and exercised its discretion.
    The trial court granted the government‘s specific requests to exclude Richardson‘s
    testimony that he acquired drugs from a member of Wheaton‘s family earlier that
    day, and that police had executed a search warrant at apartment 203 in the fall of
    2008. After granting those requests, the court extended its ruling to exclude
    15
    Richardson from testifying that he informed police about drug sales from
    apartment 203. The trial court explained that evidence that Richardson informed
    on Wheaton cannot bridge the gap to establish, or even support, any factual
    conclusion about what Wheaton actually knew, and that absent any additional
    independent evidence about what Wheaton actually knew or believed,
    Richardson‘s speculation about what he believed would be deemed by the court to
    be irrelevant.
    We next consider whether the trial court‘s ruling was based on a sufficient
    factual foundation in the record, and whether the trial court considered every
    proper factor and no improper factors, and whether the court‘s reasoning actually
    supports its ruling. We conclude that the trial court required Richardson to prove
    too much. The trial court said that the ―snitch‖ evidence could not bridge the gap
    between what Richardson believed about what Wheaton thought and what
    Wheaton actually thought. However, in order to raise self-defense in this case,
    Richardson did not have to show that his beliefs underlying his self-defense claim
    were true, only that they were reasonable and honestly held. Swann v. United
    States, 
    648 A.2d 928
    , 930 (D.C. 1994).
    16
    As this court has observed, the standards for making a self-defense claim in
    a homicide case are exacting: Richardson was entitled to an acquittal on that basis
    only if the jury concluded (1) that he honestly believed that, when he stabbed
    Wheaton, he was in imminent danger of serious bodily harm or death, and that he
    had to use lethal force to save himself from that harm; and (2) that both beliefs
    were objectively reasonable. 
    Id. (citing cases
    and the Criminal Jury Instructions
    for the District of Columbia, Nos. 5.12, 5.13 (4th ed. 1993)).11 Furthermore, the
    first aggressor in a conflict cannot claim self-defense. Martin v. United States, 
    452 A.2d 360
    , 363 (D.C. 1982). In excluding the ―snitch‖ evidence for irrelevance, the
    trial court implicitly concluded that the proffered evidence was not relevant to any
    part of Richardson‘s self-defense claim.
    11
    Once the defendant has established sufficient evidence to justify giving
    the jury a self-defense instruction, the burden shifts to the government to disprove
    beyond a reasonable doubt the defendant‘s self-defense claim by showing that
    these conditions are not met. See Comber v. United States, 
    584 A.2d 26
    , 41 & n.17
    (D.C. 1990). As this court has explained, see 
    id. at 41,
    self-defense claims fall into
    two categories: ―perfect‖ and ―imperfect.‖ To make out a ―perfect‖ self-defense
    claim, the defendant‘s beliefs that that lethal force was required to prevent
    imminent death or serious bodily harm must be objectively reasonable. If they are
    objectively unreasonable but honestly held, then the claim is ―imperfect.‖ Here,
    because Richardson is facing a voluntary manslaughter charge, he must make out a
    ―perfect‖ self-defense claim to be entitled to an acquittal. See generally 
    id. at 37-
    40 (explaining the two types of self-defense claims and their interaction with the
    various types of homicide charges).
    17
    A person‘s right of self-defense, and especially the degree of force the
    victim is permitted to use to prevent bodily harm, is premised substantially on the
    victim‘s own reasonable perceptions of what is happening. Fersner v. United
    States, 
    482 A.2d 387
    , 391 (D.C. 1984); see also 
    Johnson, 960 A.2d at 297
    . The
    court‘s self-defense instruction put at issue Richardson‘s beliefs about what was
    happening and the objective reasonableness of these beliefs.
    Here the trial court concluded, in effect, that the ―snitch‖ evidence was not
    relevant to what Wheaton actually believed. However, it is Richardson‘s beliefs,
    rather than Wheaton‘s, and the objective reasonableness of those beliefs, that are at
    issue in his self-defense claim; the trial court‘s failure to consider this factor was
    error.
    The ―snitch‖ evidence was relevant to Richardson‘s self-defense claim in
    several ways. First, Richardson said he believed that people who become known
    as ―snitches‖ in the community face repercussions, and that he therefore tried to
    hide his dealings with the police. He was reluctant to meet Sergeant Washington
    in person, because he feared that it would get ―leaked‖ to the community, and
    ―once you give information up, somehow, some way people find out that you‘re
    giving information up.‖        Richardson gave police specific information about
    18
    Wheaton, and the police subsequently searched Wheaton‘s apartment and arrested
    at least one family member. Because Richardson indicated that he believed that
    people would somehow learn what he did, the jury could find that Richardson
    honestly believed that Wheaton knew what he had done, and that he therefore
    feared ―repercussions‖ from Wheaton, in the form of serious bodily harm or death,
    and that the lethal force he actually used was necessary to prevent that harm.
    Second, the ―snitch‖ evidence is relevant to Richardson‘s credibility, in that
    it supports and explains Richardson‘s testimony that Wheaton called him a ―snitch-
    ass bitch‖ when they fought outside. A jury that heard the other ―snitch‖ evidence
    might be more inclined to credit that piece of Richardson‘s testimony, which might
    otherwise appear to be an isolated and perhaps not credible attempt on
    Richardson‘s part to fabricate a motive and impute it to the deceased Wheaton,
    who is not in a position to contradict his testimony. The fact that Richardson
    actually had talked to the police about Wheaton could be viewed as explaining to
    the jury why Wheaton might indeed have made that remark.
    The ―snitch‖ evidence is also relevant to the objective reasonableness of
    Richardson‘s beliefs. First, it provides context for Wheaton‘s ―snitch-ass bitch‖
    remark that makes that remark seem more ominous and threatening. Even if the
    19
    jury credited Richardson‘s statement that Wheaton called him a ―snitch-ass bitch‖
    that afternoon, the jury might find it speculative to conclude from that evidence
    alone that Richardson reasonably believed that Wheaton thought that Richardson
    had spoken to the police and had given them information about Wheaton and his
    family. The other ―snitch‖ evidence gives the jury at least a tentative basis from
    which to draw that inference and a context that makes it more plausible. It also ties
    in with Richardson‘s testimony that he felt ―something hard‖ hit his back when he
    and Wheaton were in the hallway.        The snitch evidence is relevant to what
    Richardson believed was happening in that moment.           Although the objective
    reasonableness of Richardson‘s beliefs is a jury question, the factual backgrounds
    of some of our cases demonstrate that the consequences of being perceived as a
    ―snitch‖ can be serious indeed. See, e.g., Winfield v. United States, 
    676 A.2d 1
    , 3
    (D.C. 1996) (en banc) (victim survived being abducted, stabbed, shot, and left for
    dead in the woods only to be fatally shot on the street weeks later because she co-
    operated with the government in its investigation of an armed robbery).
    For the foregoing reasons, we conclude that the trial court failed to take into
    account certain factors that it should have considered in deciding whether the
    20
    ―snitch‖ evidence was relevant. 12 Its ruling was therefore an erroneous exercise of
    discretion.
    IV.
    Because the court erroneously exercised its discretion in excluding the
    ―snitch‖ evidence described above, we consider whether the error was harmless—
    the fifth part of the five part test we apply in order to determine whether the court
    abused its discretion. The government urges that we apply harmless error review
    and affirm if ―we can say, ‗with fair assurance, after pondering all that happened
    and without stripping the erroneous action from the whole, that the judgment was
    not substantially swayed by the error.‘‖ Clark v. United States, 
    639 A.2d 76
    , 84
    (D.C. 1996) (quoting Kotteakos v. United States, 
    328 U.S. 750
    , 765 (1946))
    (internal alterations omitted). Richardson argues that we should instead apply the
    more stringent constitutional harmless error test of Chapman v. California, and
    affirm only if we are convinced beyond a reasonable doubt that the error was
    12
    We have recognized that the victim‘s beliefs are also relevant to a self-
    defense claim. See, e.g., 
    Riddick, 995 A.2d at 217
    (―[W]here the defendant in a
    murder case admits killing the victim but has asserted a complete defense such as
    accident or self-defense, the victim‘s mind is of particular concern to the jury.‖
    (citing (David) Clark v. United States, 
    412 A.2d 21
    , 25 (D.C. 1980)); Hairston v.
    United States, 
    500 A.2d 994
    , 997-98 (D.C. 1985); Hill v. United States, 
    600 A.2d 58
    , 61 n. 3 (D.C. 1991)).
    21
    harmless. 
    Clark, 639 A.2d at 81
    (quoting Chapman v. California, 
    386 U.S. 18
    , 24
    (1967)). Review of the error under the Chapman standard is appropriate if the
    exclusion of evidence prevented Richardson from presenting a complete defense.
    We conclude that under the circumstances reversal is required under either
    Kotteakos or Chapman. As we will explain, we reach that conclusion by applying
    the test for reversible error set forth in Heath v. United States, 
    26 A.3d 266
    (D.C.
    2011).
    Defendants have a constitutional right to present a complete defense. See
    Crane v. Kentucky, 
    476 U.S. 683
    , 690 (1986). Our interpretation and application
    of the rules governing admissibility of evidence must therefore accommodate that
    right.     See Chambers v. Mississippi, 
    410 U.S. 284
    , 302 (1973) (―[W]here
    constitutional rights directly affecting the ascertainment of guilt are implicated, the
    hearsay rule may not be applied mechanistically to defeat the ends of justice.‖).
    While this principle applies to our interpretation of the rules governing relevance,
    those rules do not mutate to accommodate theories of defense. However, even
    where a defendant‘s constitutional right to present a complete defense is not at
    stake, ―[i]t is well settled that if the evidence offered conduces in any reasonable
    degree to establish the probability or improbability of the fact in controversy, it
    should go to the jury. It would be a narrow rule, and not conducive to the ends of
    22
    justice, to exclude it on the ground that it did not afford full proof of the non-
    existence of the disputed fact.‖ Home Ins. Co. v. Weide, 78 U.S. (11 Wall.) 438,
    440 (1870).
    Over the past two decades our case law has refined the contours of the
    concept of the complete defense that a defendant has a right to present. Defendants
    do not have an unfettered right to present any evidence whatsoever. See, e.g.,
    Roundtree v. United States, 
    581 A.2d 315
    , 327 (D.C. 1990) (exclusion of evidence
    about the appearance of sexual assault victim‘s genitals did not prevent defendant
    from presenting a complete defense when defendant could not articulate a
    legitimate basis for its admission). Rather, defendants have a right to present
    ―crucial relevant evidence establishing a valid defense.‖ Price v. United States,
    
    697 A.2d 808
    , 813 (D.C. 1997) (internal quotation marks omitted).            Not all
    relevant evidence meets this bar. For instance, in 
    Riddick, 995 A.2d at 216
    , the
    trial court excluded the victim‘s handwritten note revealing her distress that
    appellant was ―pulling away . . . more and more.‖ The defendant wanted to use the
    note to establish that the victim‘s distress could have led her to react aggressively
    toward him, but he was able to present other more persuasive evidence of the
    victim‘s anger and jealousy toward him in the months before her death. 
    Id. at 220.
    In Clark v. United States, 
    639 A.2d 76
    , 81 (D.C. 1993), the trial court excluded
    23
    from evidence a photo array from which a witness identified appellant.            The
    defendant wanted to use the photo array to undermine the government‘s assertion
    that he reason the witness was hesitant about her identification of the defendant
    was that the photos in the array looked so similar. 
    Id. at 82.
    We affirmed in both
    Riddick and Clark, having concluded that neither exclusion prevented the
    defendant from presenting a complete defense because the defendant had ample
    opportunity to present other evidence supporting those defenses. 
    Id. Generally, our
    inquiry into whether an exclusion of evidence prevented a
    defendant from presenting a complete defense is highly fact-specific. We have
    found, for instance, that exclusions of relevant evidence have constitutional
    implications when they limit the defendant‘s ability to explain a witness‘s potential
    biases to the jury. See, e.g., Scull v. United States, 
    564 A.2d 1161
    , 1166 (D.C.
    1989) (limits imposed on appellant‘s cross examination prevented appellant from
    presenting complete defense when ―there was a realistic chance that the proposed
    cross-examination had an impact on the outcome of the trial [because] it might
    have led the jury to doubt dispositive testimony against appellant . . . .‖); Bassil v.
    United States, 
    517 A.2d 714
    , 716 (D.C. 1986) (exclusion of evidence about
    witness‘s reputation for untruthfulness prevented appellant from presenting
    complete defense).    The right to present a complete defense also entitles the
    24
    defendant to present fully its theory of the case. See, e.g., McDonald v. United
    States, 
    904 A.2d 377
    , 382 (D.C. 2006) (exclusion of evidence of extent of
    appellant‘s injuries sustained during arrest deprived appellant of right to present
    complete defense where defendant‘s theory was that police fabricated charges
    against him to cover up their use of excessive force); Howard v. United States, 
    656 A.2d 1106
    , 1118 (D.C. 1995) (exclusion of testimony from appellant and another
    witness that victim had previously threatened appellant with a gun and fired a shot
    at appellant deprived appellant of ―meaningful opportunity‖ to present evidence on
    provocation defense and therefore violated defendant‘s right to present complete
    defense).
    Until the time this court issued its opinion in Heath, 
    26 A.3d 266
    , there
    remained the question how the court should determine whether excluded evidence
    was so critical to the defense that its exclusion violated a defendant‘s constitutional
    right to present a defense. In Heath, we adopted a modified version of an objective
    materiality test that the United States Court of Appeals for the Second Circuit,
    borrowing from the materiality standard set forth in United States v. Agurs, 
    427 U.S. 97
    (1976), had adopted in Justice v. Hoke, 
    90 F.3d 43
    , 47 (2d Cir. 1996). In
    Heath, we wrote,
    25
    [W]hether an erroneous exclusion of defense evidence
    violates the defendant‘s constitutional right to present a
    defense depends upon whether there exists a reasonable
    probability that the omitted evidence, evaluated in the
    context of the entire record, would have led the jury to
    entertain a reasonable doubt that did not otherwise exist.
    
    Heath, 26 A.3d at 281
    (emphasis in original to indicate the difference between this
    rule and the Second Circuit‘s rule articulated in Agard v. Portuondo, 
    117 F.3d 696
    ,
    705 (2d Cir. 1997), rev’d on other grounds, 
    529 U.S. 61
    (2000)).13
    In Heath, we observed that we reach the same result under Kotteakos or
    Chapman whenever exclusion of evidence reaches reversible error of constitutional
    magnitude.     
    Heath, 26 A.3d at 281
    .14         The evidence that a defendant is
    constitutionally entitled to present is precisely that evidence that, in the context of
    the entire record, stands a reasonable chance of turning the trial. And where that is
    the case, when we turn to harmlessness review of either stripe, we will be unable to
    say with fair assurance that the exclusion of such evidence did not substantially
    13
    Because Heath was decided on July 21, 2011, several months after
    Richardson‘s trial, the trial judge in this case did not have the benefit of this
    decision when trying this case.
    14
    We observe that ―commission of a constitutional error at trial alone does
    not entitle a defendant to automatic reversal.‖ Washington v. Recuenco, 
    548 U.S. 218
    (2006) (citing Neder v. United States, 
    527 U.S. 1
    , 8 (1999)).
    26
    sway the outcome, and or that its exclusion was harmless beyond a reasonable
    doubt.
    We apply the Heath test to determine whether the trial court‘s exclusion of
    the ―snitch‖ evidence restricted Richardson from presenting a complete defense.
    Richardson‘s defense was, in part, that he feared that Wheaton knew that he had
    given police information about drug sales from apartment 203, and that that is why
    Wheaton attacked him on the porch, and also why, when the fight continued inside
    the apartment building, he reasonably believed that Wheaton might kill or inflict
    serious bodily harm on him, and that lethal force was required to prevent that. The
    court prevented Richardson from presenting certain evidence that would have
    helped him explain to the jury why these fears were reasonable.           Although
    Richardson was allowed to testify that Wheaton called him a ―snitch-ass bitch‖
    when they fought outside their apartment complex, this single piece of evidence
    did not go far in explaining why Richardson might reasonably have feared that
    Wheaton knew that he had given police information about Wheaton‘s drug sales.
    See 
    Howard, 656 A.2d at 1118
    (appellant‘s single statement that the victim had
    shot at him in the past was ―so cryptic [and] so devoid of details‖ that appellant
    was deprived of a meaningful opportunity to present a provocation defense). That
    isolated piece of testimony would not have given the jury adequate reason to
    27
    believe that Richardson feared that Wheaton knew what he had done and sought to
    retaliate, and no context from which to consider whether that fear was a reasonable
    one.15        The excluded evidence also has the potential to make Richardson‘s
    testimony that Wheaton called him a ―snitch-ass bitch‖ more credible.
    Furthermore, the government‘s evidence against Richardson was not
    overwhelming, and this matters when we consider what effect the additional
    excluded evidence could have had on the outcome. There was already evidence in
    the record that Wheaton hit Richardson with a crowbar, and the ―snitch‖ evidence
    could have led the jury to re-evaluate the relevance and credibility of that
    testimony. The excluded evidence would have provided the jury with additional
    reasons to credit parts of Richardson‘s testimony and that of other defense
    witnesses, and it would have provided evidence that Richardson honestly and
    reasonably feared imminent death or serious bodily harm at Wheaton‘s hands, and
    that he honestly and reasonably believed that lethal force was necessary to prevent
    15
    We note that appellant‘s argument that the ―snitch‖ evidence was crucial
    to the defense is undercut somewhat by the fact that at the first trial defense
    counsel did not mention the admitted evidence about snitching in his closing
    argument, yet won acquittal on the murder charge. We also note, however, that in
    the first trial, appellant was able to assert a defense of imperfect self-defense to the
    charges of first-degree and second-degree murder, but not to the lesser-included
    offense of manslaughter. To succeed with a self-defense theory as to manslaughter
    appellant had to make a showing that his fear of death or serious bodily harm was
    objectively reasonable, and the ―snitch‖ evidence could have helped establish this.
    28
    that harm. We therefore conclude that there is a reasonable probability that the
    omitted evidence, evaluated in the context of the entire record, would have led the
    jury to entertain a reasonable doubt that did not otherwise exist, and that the
    exclusion therefore prevented Richardson from presenting a complete defense in
    violation of his constitutional rights. See 
    Heath, 26 A.3d at 281
    . For these same
    reasons, we are not convinced that the trial court‘s erroneous exercise of discretion
    in excluding the ―snitch‖ evidence was harmless beyond a reasonable doubt.
    Reversal of these convictions is therefore required.16
    Accordingly, for the foregoing reasons we reverse Richardson‘s convictions
    for voluntary manslaughter while armed and carrying a dangerous weapon and
    remand the case to the trial court for further proceedings.
    16
    As Richardson‘s convictions are being reversed and the case will most
    likely be tried again, the trial court will be called upon again to make the highly
    discretionary rulings concerning the evidence of past crimes and other bad acts
    attributed to Richardson. The rulings will be made on the basis of the record at
    that trial. While we will comment that the rulings that admitted evidence of
    Richardson‘s acts on the day of the homicide appear well within the court‘s
    discretion, we remark that rulings on appellant‘s use of PCP on the days and
    months before the homicide, and his behavior after such use, may present more
    difficult questions. Accordingly, the trial court should state the basis of its rulings,
    applying the principles regarding such matters in Drew v. United States, 
    331 F.2d 85
    (D.C. Cir. 1964); (William) Johnson v. United States, 
    683 A.2d 1087
    (D.C.
    1996) (en banc); United States v. Morton, 
    50 A.3d 476
    (D.C. 2012); Harrison v.
    United States, 
    30 A.3d 169
    (D.C. 2011), and other cases.
    29
    So ordered.