Lynette Wilson v. City of Chicago , 758 F.3d 875 ( 2014 )


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  •                                      In the
    United States Court of Appeals
    For the Seventh Circuit
    ____________________
    No. 13-1279
    LYNETTE WILSON, individually
    and as Administratrix of the
    Estate of Raul Adan Barriera,
    deceased,
    Plaintiff-Appellant,
    v.
    CITY OF CHICAGO, et al.,
    Defendants-Appellees.
    ____________________
    Appeal from the United States District Court for the
    Northern District of Illinois, Eastern Division.
    No. 07 C 1682 — Joan Humphrey Lefkow, Judge.
    ____________________
    ARGUED APRIL 10, 2014 — DECIDED JULY 14, 2014
    ____________________
    Before CUDAHY and EASTERBROOK, Circuit Judges, and
    LAWRENCE, District Judge. *
    *   Of the Southern District of Indiana, sitting by designation.
    2                                                         No. 13-1279
    LAWRENCE, District Judge. This case arises out of the fatal
    shooting of Raul Barriera by a Chicago police officer. Barri-
    era’s mother, Lynette Wilson, filed suit on behalf of herself
    and Barriera’s estate against the City of Chicago and the of-
    ficers who were present at the scene: Andrew Hurman, Da-
    vid Cummens, and Donald Jerome. Wilson ultimately as-
    serted the following claims at trial: (1) a claim against the po-
    lice officers pursuant to § 1983 for excessive force in viola-
    tion of the Fourth Amendment; (2) a claim for wrongful
    death against the police officers pursuant to Illinois law; (3) a
    claim under the Illinois Survival Statute against the police
    officers; and (4) a claim that the City was liable for the torts
    of the officers under the theory of respondeat superior. The ju-
    ry found in favor of the defendants on each of Wilson’s
    claims, and the district court denied Wilson’s motions for a
    new trial and for judgment as a matter of law. 1 Wilson now
    appeals, asserting that the trial court made several incorrect
    evidentiary rulings and erred in various respects regarding
    the manner in which it instructed the jury. We affirm.
    I. BACKGROUND
    On the morning of February 28, 2007, Barriera barricaded
    himself in his bedroom. Barriera, who had been diagnosed
    with schizophrenia three years earlier, had not been taking
    his medicine regularly, and his mother feared he might harm
    himself. When the efforts of his mother, grandmother, and
    brother to convince him to leave his room were unsuccess-
    ful, Wilson called 911 for assistance.
    1
    The trial was conducted by Judge William Hibbler. After his death, the
    case was reassigned to Judge Joan Lefkow, who denied the post-trial mo-
    tions.
    No. 13-1279                                                     3
    When paramedics and firefighters arrived, Wilson ex-
    plained her fear that Barriera might be suicidal because he
    was not taking his medication. After unsuccessfully trying to
    coax Barriera out of his room, a firefighter attempted to open
    the bedroom door and found that something was blocking it;
    with some effort he was able to open it enough to observe
    Barriera holding a hunting knife and moving around the
    room. The firefighter called for police assistance and held the
    door closed until officers arrived.
    Defendants Hurman and Cummens arrived a few
    minutes later. The parties disagree regarding how events un-
    folded next, but we must view the evidence in the light that
    supports the jury’s verdict. Common v. City of Chicago, 
    661 F.3d 940
    , 942 (7th Cir. 2011) (citing Matthews v. Wisconsin En-
    ergy Corp., Inc., 
    642 F.3d 565
    , 567 (7th Cir. 2011)). The officers
    worked for several minutes to persuade Barriera to leave his
    room, but were unsuccessful. A short time later, Jerome ar-
    rived. He deployed his taser through the partially open bed-
    room door, hitting Barriera as he stood about seven feet
    from the door. Barriera removed the taser prongs from his
    chest. About thirty seconds later, he lunged at the officers
    with the knife in his hand. Fearing for their lives, Jerome de-
    ployed the taser and Hurman fired two shots from his
    weapon. Barriera was struck by the taser prongs and both
    bullets. The officers entered the bedroom, knocked the knife
    from Barriera’s hand, and handcuffed him so he could be
    transported to the hospital. Barriera later died from the inju-
    ries he sustained.
    II. DISCUSSION
    Wilson raises four enumerated issues on appeal. Three of
    them relate to the district court’s jury instructions regarding
    4                                                 No. 13-1279
    her wrongful death claim; the fourth addresses several evi-
    dentiary rulings that Wilson argues were erroneous and
    prejudicial to her. We address each argument, in turn, be-
    low.
    A. Wrongful Death Instructions
    When reviewing errors relating to jury instructions,
    “[w]e consider the instructions as a whole, analyzing them
    deferentially to determine whether they accurately state the
    law and do not confuse the jury.” Rapold v. Baxter Int’l, Inc.,
    
    718 F.3d 602
    , 609 (7th Cir. 2013). “The standard of review is a
    liberal one: we look at jury instructions only to determine if
    taken as a whole they were sufficient correctly to inform the
    jury of the applicable law. Even if the instruction contains
    errors or misguides the jury, the error is reversible only if a
    litigant is prejudiced.” 
    Id.
     (citations and internal quotation
    marks omitted). While the parties approach the issues from
    several angles—discussing at length, for example, whether
    certain arguments were waived and whether the district
    court should have applied Rule 16(e)’s “manifest injustice”
    standard—the question before us boils down to whether the
    court’s instructions properly set out the law with regard to
    Wilson’s wrongful death claim.
    We begin, then, with what the applicable law is. The Illi-
    nois Wrongful Death Act provides a mechanism for suit to
    be brought by the personal representative of a decedent
    whose death was “caused by wrongful act, neglect, or de-
    fault, and the act, neglect or default is such as would, if
    death had not ensued, have entitled the party injured to
    maintain an action and recover damages in respect thereof.”
    740 ILCS 180/1. In this case, the “wrongful act” at issue was
    the shooting of Barriera by Hurman; if Hurman would have
    No. 13-1279                                                   5
    been liable to Barriera for the tort of battery had Barriera
    survived the shooting, he would be liable to Wilson under
    the wrongful death statute. Thus, Wilson had the burden of
    proving the elements of the civil tort of battery, which, in its
    simplest terms, is defined as “the unauthorized touching of
    the person of another.” Curtis v. Jaskey, 
    759 N.E.2d 962
    , 964
    (Ill. App. Ct. 2001). In addition, the Defendants asserted the
    affirmative defense of immunity under § 2-202 of the Illinois
    Local Governmental and Governmental Employees Tort
    Immunity Act (“Immunity Act”), which provides that “[a]
    public employee is not liable for his act or omission in the
    execution or enforcement of any law unless such act or
    omission constitutes willful and wanton conduct.” 745 ILCS
    10/2–202. Wilson does not dispute that she had the burden of
    proving that Hurman acted willfully and wantonly.
    With the applicable law in mind, we turn to the district
    court’s instructions. The jury was first instructed that Wilson
    had the burden of proving that Barriera was injured as a re-
    sult of Hurman’s willful and wanton conduct. The following
    instructions were then given:
    The Plaintiff, Lynette Wilson, as Administrator of the
    estate of Raul Barriera, deceased, claims that she was
    injured and sustained damage and that the conduct of
    defendant Officer Hurman was willful and wanton in
    the following respect:
    1. Shot the decedent, Raul Barriera, without
    justification in that he lacked a reasonable
    belief that such force was necessary to pre-
    vent imminent death or great bodily harm
    to himself or to others.
    6                                                  No. 13-1279
    …
    When I use the expression willful and wanton, I mean
    a course of action which shows an utter indifference
    to or conscious disregard for the safety of others.
    Wilson argues that these instructions were erroneous in sev-
    eral respects.
    Wilson first argues that the district court improperly
    shifted the burden of proof to her to disprove the affirmative
    defense of justification. The question of which party bears
    the burden of proof on that issue in a case in which immuni-
    ty under the Immunity Act is asserted is, of course, one of
    Illinois law. Because the Illinois Supreme Court has not ad-
    dressed the issue, “we are called upon to predict how that
    court would decide if presented with the same question.”
    Harper v. Vigilant Ins. Co., 
    433 F.3d 521
    , 525 (7th Cir. 2005).
    In the absence of guiding decisions by the state’s
    highest court, we consult and follow the decisions of
    intermediate appellate courts unless there is a con-
    vincing reason to predict the state’s highest court
    would disagree. See Fidelity Union Trust Co. v. Field,
    
    311 U.S. 169
    , 177–78 (1940) (“An intermediate state
    court in declaring and applying the state law is acting
    as an organ of the State and its determination, in the
    absence of more convincing evidence of what the
    state law is, should be followed by a federal court in
    deciding a state question.”); Klunk v. County of St. Jo-
    seph, 
    170 F.3d 772
    , 777 (7th Cir. 1999) (“To the extent
    that the state’s highest court has not addressed an is-
    sue, we examine the decisions of the lower state
    courts.”).
    No. 13-1279                                                               7
    ADT Sec. Servs., Inc. v. Lisle-Woodridge Fire Protection Dist.,
    
    672 F.3d 492
    , 498 (7th Cir. 2012).
    The Illinois Court of Appeals recently addressed the pre-
    cise issue raised by Wilson in Davis v. City of Chicago, 
    8 N.E.3d 120
     (Ill. Ct. App. 2014), reh’g denied, another case in-
    volving a wrongful death claim arising out of a fatal police
    shooting. There, as here, the defendants asserted immunity
    under 745 ILCS 10/2-202 and the plaintiff argued that it was
    error for the trial court to instruct the jury that the plaintiff
    had the burden of proving that the officer acted “without
    legal justification.” 2 The Illinois Court of Appeals rejected
    that argument, holding that requiring the plaintiff to prove
    that the officer acted without legal justification “harmonized
    [the] plaintiff’s burden of proof on her battery claim to prove
    the contact was unauthorized, the affirmative defense of
    immunity … and the plaintiff’s burden to prove willful and
    wanton conduct, while accounting for self-defense or legal
    justification as a legally authorized contact.” Davis, 8 N.E.3d
    at 148. We see no convincing reason to believe the Illinois
    Supreme Court would disagree with this holding. To hold
    otherwise would ignore the requirement that a plaintiff as-
    serting a battery claim—whether directly or as the basis of a
    wrongful death claim—must prove all of the elements of
    that claim, including that an unauthorized touching oc-
    curred. Accordingly, the district court did not err by requir-
    2
    In Davis, the court included the “without legal justification” language in
    the definition of “willful and wanton” rather than in the description of
    the alleged willful and wanton act, but the effect was the same—the bur-
    den was placed on the plaintiff to prove that the officer acted without
    justification, rather than on the defendants to prove that the shooting
    was legally justified.
    8                                                   No. 13-1279
    ing Wilson to prove that Officer Hurman lacked justification
    to shoot Barriera.
    Given this analysis, the resolution of the second issue
    raised by Wilson is a foregone conclusion. Wilson argues
    that the district court should not have instructed the jury on
    justification at all because the defendants did not plead it as
    an affirmative defense. In the absence of a properly raised
    affirmative defense, Wilson argues, the defendants should
    not have been permitted to avoid liability for wrongful
    death based upon the presence of a legal justification for the
    shooting. While justification, or self-defense, can be an af-
    firmative defense, in this case lack of justification was part of
    what Wilson was required to prove in order to demonstrate
    that Officer Hurman willfully and wantonly committed bat-
    tery rather than a legally authorized touching; therefore, the
    fact that the defendants did not assert the affirmative de-
    fense of justification is of no moment. See Davis, 8 N.E.3d at
    144 (rejecting the same argument and noting that the de-
    fendants “presented evidence that Officer Garza's intention-
    al shooting of Hamilton was not ‘willful and wanton’ be-
    cause he acted in self-defense”).
    Finally, Wilson argues that the definition of “willful and
    wanton” used by the district court was erroneous. The Im-
    munity Act provides as follows:
    “Willful and wanton conduct” as used in this Act
    means a course of action which shows an actual or de-
    liberate intention to cause harm or which, if not inten-
    tional, shows an utter indifference to or conscious dis-
    regard for the safety of others or their property.
    No. 13-1279                                                    9
    745 ILCS 10/1-210. Wilson argues that, given the definition of
    willful and wanton, “[i]f a defendant admits that [he] in-
    tended to harm someone, then [he has] conceded that [his]
    conduct was willful and wanton. In fact, because Defendant
    Herman [sic] admitted that he intentionally shot the dece-
    dent, then there was no need to instruct on willful and wan-
    ton at all.” Appellant’s Br. at 41. This argument also is fore-
    closed by the holding of Davis; indeed, the court in that case
    specifically rejected the plaintiff’s proposed instruction be-
    cause it “would have incorrectly made defendants automati-
    cally liable for the intentional shooting without accounting
    for the affirmative defense of tort immunity.” Davis, 8
    N.E.3d at 148.
    Wilson also objects to the fact that the district court’s in-
    struction defining “willful and wanton conduct” omitted the
    reference to “actual or deliberate intention to cause harm”
    found in the statutory definition which, she argues, required
    her to “argue to the jury that it should look into Defendant’s
    Herman [sic] head and determine if he was consciously dis-
    regarding the safety of ‘others’ instead of simply pointing
    out that Defendant Herman [sic] admitted he intentionally
    harmed the decedent.” Appellant’s Br. at 41–42. Any error in
    the instruction used by the district court is harmless. With
    regard to Wilson’s excessive force claim, the jury was in-
    structed that “[a]n officer may use deadly force when a rea-
    sonable officer, under the same circumstances, would be-
    lieve that the suspect’s actions placed him or others in the
    immediate vicinity in imminent danger of death or serious
    bodily harm.” In finding against Wilson on that claim, the
    jury necessarily found that Wilson did not prove that the
    shooting was without legal justification. Because Wilson was
    required to make the same showing in order to prevail on
    10                                                  No. 13-1279
    her wrongful death claim, that claim was doomed regardless
    of how the district court defined willful and wanton.
    B. Evidentiary Rulings
    Wilson also argues that the district court made several
    erroneous evidentiary rulings. We review the trial court’s
    evidentiary rulings for an abuse of discretion. Estate of Es-
    cobedo v. Martin, 
    702 F.3d 388
    , 399 (7th Cir. 2012). “We will
    reverse only if no reasonable person would agree with the
    trial court’s ruling and the error likely affected the outcome
    of the trial.” Perry v. City of Chicago, 
    733 F.3d 248
    , 252 (7th
    Cir. 2013).
    1. Allowing testimony regarding Barriera’s drug and alcohol
    use
    Wilson called Dr. Sheldon Greenberg, a psychiatrist who
    treated Barriera for several years, to testify during the trial.
    Just before Dr. Greenberg took the stand, Wilson orally
    moved in limine to preclude him from being asked about
    Barriera’s marijuana and alcohol use. In making the motion,
    Wilson’s counsel represented that the only mention of sub-
    stance abuse by Barriera in Dr. Greenberg’s notes was a sin-
    gle progress note from July 2003; she argued that this isolat-
    ed incident was irrelevant to the issues in the case in light of
    the lack of evidence that Barriera had drugs or alcohol in his
    system at the time of the shooting. Defense counsel repre-
    sented (correctly) to the district court that the psychiatrist’s
    notes indicated that Barriera’s marijuana and alcohol use
    was not limited to only one instance. The district court de-
    nied Wilson’s motion in limine, finding that it was “only
    proper that the jury gets an entire picture of the decedent in
    this case.” Trial Tr. at 148.
    No. 13-1279                                                11
    Given the court’s ruling, Wilson’s counsel decided to ad-
    dress the issue of Barriera’s drug and alcohol use with Dr.
    Greenberg on direct examination. Dr. Greenberg testified
    that when he first met with Barriera in July 2003, he reported
    using a relatively small amount of marijuana on occasion
    and using alcohol to “numb the voices” in his head. Id. at
    159. Dr. Greenberg opined that Barriera’s marijuana use was
    not heavy enough to have aggravated his psychotic symp-
    toms. Nonetheless, Dr. Greenberg’s treatment recommenda-
    tion included eliminating all marijuana and alcohol use. Dr.
    Greenberg testified that there was no indication that mariju-
    ana or alcohol use had ever made Barriera violent, but ex-
    plained that it could “have a disinhibiting effect where he
    might become more upset or easily irritated with others.” Id.
    at 173. In April 2005, Barriera reported to Dr. Greenberg that
    he had gotten into a fight after drinking “two or three vod-
    kas”; typically at that time he drank an average of only one
    beer per week. Id. at 171–72, 183. On cross-examination, Dr.
    Greenberg explained that he did not believe that Barriera’s
    substance abuse “led to a significant exacerbation of symp-
    toms … [b]ut there is a risk of [sic] with significant binge
    drinking of alcohol or severe marijuana intoxication that it
    could be an exacerbation of symptoms.” Id. at 181. He also
    testified that in June 2006 Barriera reported that he had
    blacked out from drinking alcohol on his birthday. On his
    final visit with Dr. Greenberg, in August 2006, Barriera re-
    ported that he continued to drink beer and occasionally
    binged on alcohol.
    The only ground Wilson gave for her motion in limine re-
    garding Dr. Greenberg was that “what drugs or alcohol he
    may have self-reported four years before this incident hap-
    pened” was irrelevant given the fact that there was no evi-
    12                                                  No. 13-1279
    dence that he had drugs or alcohol in his system at the time
    of the shooting. Id. at 145. Given Dr. Greenberg’s testimony,
    the basis for Wilson’s objection was factually inaccurate.
    Wilson made no argument at trial regarding the relevance of
    the evidence of more recent alcohol use. Even if she had
    made the proper argument, the standard for relevance under
    the Federal Rules of Evidence is a liberal one; pursuant to
    Rule 401, “testimony is relevant as long as it ‘has any ten-
    dency to make a fact more or less probable’ than it would
    otherwise be.” Stollings v. Ryobi Techs., Inc., 
    725 F.3d 753
    , 768
    (7th Cir. 2013) (quoting Fed. R. Evid. 401). Given this liberal
    standard, we cannot say that the district court abused its dis-
    cretion in finding evidence regarding Barriera’s past drug
    and alcohol use relevant. The jury was instructed that, if it
    found in favor of Wilson on her wrongful death claim, it was
    to assess damages for the loss of society suffered by Barri-
    era’s mother and brother, which the court properly defined
    as the loss of “the mutual benefit that each family member
    receives from the other’s continued existence, including love,
    affection, care, attention, companionship, comfort, guidance
    and protection.” The fact that Barriera—if only occasional-
    ly—used drugs and alcohol against the advice of his psychi-
    atrist, when doing so had the potential to exacerbate the
    symptoms of his schizophrenia, was relevant to the jury’s
    loss of society assessment; it was, as the district court said,
    part of the “entire picture” of who Barriera was.
    On appeal, Wilson’s primary argument is that permitting
    this testimony was “overly prejudicial” and that “[a]s a gen-
    eral rule probative value from evidence that a Plaintiff or
    Decedent may engage in alcohol or drug use is substantially
    outweighed by its prejudicial effect.” Appellant’s Br. at 44
    (citing Mankey v. Bennett, 
    38 F.3d 353
    , 360 (7th Cir. 1994)).
    No. 13-1279                                                   13
    Wilson did not make this argument at trial and therefore has
    waived it.
    To preserve an issue for appellate review, a party
    must make a proper objection at trial that alerts the
    court and opposing party to the specific grounds for
    the objection. An objection is proper when a timely
    objection or motion to strike appears of record, stating
    the specific ground of objection, if the specific ground
    was not apparent from the context. Neither a general
    objection to the evidence nor a specific objection on
    other grounds will preserve the issue for review.
    When a defendant does not object to the admission of
    evidence during the trial, the objection is waived and
    cannot be raised for the first time in a motion for new
    trial or on appeal.
    Naeem v. McKesson Drug Co., 
    444 F.3d 593
    , 610 (7th Cir. 2006)
    (internal citations and quotation marks omitted) (holding
    that when the only basis for objection at trial was relevance,
    additional basis raised for the first time in a post-trial motion
    was waived).
    In any event, Mankey does not stand for the “general
    rule” for which Wilson cites it; in that case, the court noted
    that “the only rationale for admitting the evidence was to
    enable the expert witness to offer an opinion about how
    Mankey’s drug and alcohol abuse would affect his life ex-
    pectancy and future earning capacity.” Mankey, 
    38 F.3d at 360
    . However, the trial court excluded the defendant’s ex-
    pert because he was not disclosed in a timely manner. Ac-
    cordingly, the rationale for admitting the evidence no longer
    existed and, “[u]nder [those] circumstances, any probative
    value of that substance abuse evidence was substantially
    14                                                     No. 13-1279
    outweighed by the danger of unfair prejudice.” 
    Id.
     A differ-
    ent rationale for admitting the evidence existed here, and
    Wilson has failed to articulate how its probative value was
    outweighed by its potential prejudice in this case.
    Wilson also argues that the trial court erred in overruling
    her objection to a question the Defendants asked medical ex-
    aminer Ponni Arunkumar, M.D. During Wilson’s direct ex-
    amination, Dr. Arunkumar testified that the toxicology re-
    ports performed as part of the autopsy of Barriera found no
    drugs or alcohol in his system. The defendants asked Dr.
    Arunkumar on cross-examination whether the blood trans-
    fusions Barriera received in the hospital could have affected
    “any alcohol level that had been in his blood if there was al-
    cohol in it.” Trial Tr. at 221. Dr. Arunkumar responded that
    “it would dilute any substance that was in the body.” 
    Id.
     We
    see no error in permitting this testimony; it was not prejudi-
    cial to permit the defendants to question the significance of
    the negative toxicology report after Wilson elicited testimo-
    ny about it.
    2. Allowing evidence that Barriera had a knife strapped to his
    thigh
    Wilson filed a motion in limine seeking to bar evidence
    that Barriera had a six-inch throwing knife taped to his thigh
    when he was shot, arguing that it was irrelevant and preju-
    dicial because Hurman did not know about it when the
    shooting occurred. The district court denied the motion and
    admitted the evidence.
    Wilson, citing Palmquist v. Selvik, 
    111 F.3d 1332
    , 1339 (7th
    Cir. 1997), argues that the district court’s ruling was errone-
    ous because the determination of whether Hurman acted
    No. 13-1279                                                   15
    reasonably when he shot Barriera depends entirely on what
    Hurman knew at the time he made the decision to shoot.
    This is a true statement of the law. See, e.g., 
    id.
     (“[W]hen con-
    sidering a charge of excessive force under the Fourth
    Amendment, evidence outside the time frame of the shoot-
    ing is irrelevant and prejudicial.”). However, where, as here,
    the actions of the plaintiff (or decedent) immediately prior to
    the shooting are disputed, evidence that tends to make one
    side or the other’s version of the events more likely to be ac-
    curate is admissible for that purpose. For example, in Com-
    mon, this court held that evidence that the decedent had
    packets of drugs in his mouth at the time he was shot by a
    police officer was admissible because
    the packets of drugs in Smith’s mouth made it more
    likely that Smith acted in the way that Officer Nelson
    contended he acted as opposed to the way that other
    witnesses contended he did. The fact that Smith pos-
    sessed illegal drugs gave him a motive to avoid their
    discovery—by hiding them in his mouth, for example.
    This made it more likely that he would initially turn
    from the officer and hide his hands as he took the
    drugs from his pockets and placed them in his mouth.
    It also made it more likely that Smith might engage in
    a flight or fight response—either turning away from
    the police, as he seemed to have done initially, or
    turning toward the officer and grabbing for his gun.
    Common, 
    661 F.3d at 945
    ; see also Saladino v. Winkler, 
    609 F.2d 1211
    , 1214 (1979) (evidence of plaintiff’s intoxication at time
    of shooting was admissible because it “tends to make more
    probable that the plaintiff acted as the defendant contended
    he did or that plaintiff otherwise conducted himself in such
    16                                                  No. 13-1279
    a manner as to place the defendant reasonably in fear of his
    life”) (quoted in Palmquist, 
    111 F.3d at 1342
    ).
    Barriera’s actions leading up to the shooting were highly
    contested. The officers testified that he lunged at them with a
    knife in his hand, causing them to fear for their lives. Wilson
    argued that the bullet trajectory and blood evidence com-
    pelled the conclusion that Barriera was sitting on his bed
    when he was shot. The fact that Barriera had a knife taped to
    his thigh makes it more likely that the officers’ version is
    correct; it suggests that Barriera was prepared for battle and
    more likely to act aggressively. Wilson concedes as much,
    acknowledging that “[i]t is both reasonable and probable
    that jurors inferred that Barriera intended to resist or other-
    wise act out in violence against the officers by strapping a
    knife to his leg prior to the officers’ arrival.” Appellant’s Br.
    at 47–48. Wilson argues that the evidence was highly preju-
    dicial because it is likely that the jury considered it when as-
    sessing whether the decision to shoot Barriera was reasona-
    ble. We disagree. “We presume that juries follow the instruc-
    tions given them by the court,” Soltys v. Costello, 
    520 F.3d 737
    , 744 (7th Cir. 2008), and here the jury was instructed
    with regard to the issue of reasonable force as follows: “You
    must make this decision based on what the officer knew at
    the time of the use of force, not based on what you now
    know.” Trial Tr. at 1140. Given the testimony about the knife
    being found in the ambulance hidden under Barriera’s cloth-
    ing, the jury was aware that Hurman did not know about
    that knife when he shot Barriera and therefore its existence
    was not relevant to whether his actions were reasonable.
    No. 13-1279                                                            17
    There was no error in admitting evidence regarding the
    knife. 3
    3. Barring certain questions of Defendant Jerome
    Finally, Wilson objects to the fact that the district court
    sustained the defendants’ objections to questions she posed
    to Jerome about the possible disciplinary ramifications to
    him if the jury found in favor of Wilson and about certain
    reports that were completed by the officers after the shoot-
    ing. Even assuming those rulings were an abuse of discre-
    tion, Wilson forfeited any challenge to them because her
    counsel made no offer of proof as required to preserve such
    an error for appeal. See U.S. v. Muoghalu, 
    662 F.3d 908
    , 913
    (7th Cir. 2011) (by giving “no indication of what he thought
    such questioning would produce that would be material” at
    trial, party forfeited a challenge to exclusion of evidence)
    (citing Fed. R. Evid. 103(a)(2)). The requirement that an offer
    of proof be made is essential in two ways. First, it gives the
    trial judge the information he or she needs to make an in-
    formed ruling. Judges are not mind readers, and even the
    most prepared judge cannot possibly know as much about a
    party’s case (and strategy) as the lawyer who is trying it.
    When the relevance of a particular line of questioning is not
    self-evident, an explanation of what the anticipated answers
    will be and how those answers advance the party’s theory of
    the case is critical. Second, without that explanation there is
    no way for a reviewing court to determine whether exclud-
    3 Wilson also raises the fact that the district court denied her motion to
    bar testimony that after the shooting Barriera gave Officer Cummens the
    finger. Assuming this evidence was improperly admitted, we cannot im-
    agine how it was prejudicial; few people would be the model of civility
    having just been hit by a taser and shot twice.
    18                                                         No. 13-1279
    ing the evidence was prejudicial. Peals v. Terre Haute Police
    Dept., 
    535 F.3d 621
    , 630 (7th Cir. 2008) (“If the party objecting
    to the exclusion of the evidence fails to make a proper offer
    of proof, there is no basis for a finding of prejudice.”) (cita-
    tion and quotation marks omitted). Because in this case we
    do not know what testimony the disallowed lines of ques-
    tioning would have elicited, we cannot find an abuse of dis-
    cretion by the trial court. 4
    III. CONCLUSION
    We AFFIRM the judgment of the district court.
    We recognize that these issues apparently were discussed at a pretrial
    4
    conference that was not on the record, and therefore the trial court may
    have had an understanding of Wilson’s position with regard to the pre-
    cluded lines of questioning that is not made clear in the record. The fact
    remains that Wilson did not make an offer to prove what Jerome’s testi-
    mony would have been had the questioning been permitted.