Cronick v. City of Colorado Springs: Rule 403 Bars “Copwatch” Character Proof and Rule 37 “Established Facts” Cannot Invite Propensity Reasoning

1) Introduction

In Cronick v. City of Colorado Springs (10th Cir. Aug. 28, 2026), plaintiff Sasha Cronick appealed a defense verdict after a jury rejected her 42 U.S.C. § 1983 claims against Colorado Springs police officers Christopher Pryor and Robert McCafferty (and related defendants). Cronick alleged she was unlawfully arrested and searched in a motel parking lot following a medical emergency response.

The central appellate issues were not the elements of probable cause in the abstract, but whether the trial was distorted by: (i) admission of numerous clips from Cronick’s unrelated, post-incident “copwatch” videos; and (ii) a discovery sanction instruction telling the jury to presume that Cronick’s recordings showed she “engages in behavior that is disruptive to police business.” Cronick also challenged monetary sanctions imposed for discovery violations.

2) Summary of the Opinion

The Tenth Circuit vacated the judgment and remanded for a new trial, holding that:

  • The district court committed a clear abuse of discretion under Federal Rule of Evidence 403 by admitting a “barrage” of unrelated “copwatch” video clips that had slight probative value (at most, on emotional-distress damages) and a severe risk of unfair prejudice through character/propensity reasoning.
  • The district court also abused its discretion by giving a Rule 37 adverse-inference (“established fact”) instruction that effectively invited the jury to infer Cronick’s conduct at the motel from her alleged disruptive conduct in other recordings—i.e., forbidden propensity reasoning.
  • These errors were not harmless; they likely had substantial influence in a short trial where credibility was pivotal.
  • The court affirmed the monetary sanction (fees/costs) against Cronick and her attorneys under Rule 37(b)(2)(C), rejecting challenges based on relevance, fault, due process, ethical concerns, and inability-to-pay.

3) Analysis

3.1 Precedents Cited

A. Rule 403 framework and deference—limits on “broad discretion”

  • Bond v. Sheriff of Ottawa Cnty., 173 F.4th 1265 (10th Cir. 2026): Provided the operative Rule 403 review formulation—maximum reasonable probative force versus minimum reasonable prejudice—and confirmed deference, but not to “clear abuse.” Bond also supported the panel’s handling of limiting instructions (including waiver principles and the overall balancing duty).
  • Eisenhour v. Weber County, 897 F.3d 1272 (10th Cir. 2018): Supplied the baseline that Rule 403 exclusion is an “extraordinary remedy” used sparingly, underscoring that reversal remains rare—making the panel’s reversal here a statement about the extremity of the prejudice.
  • Lakey v. Bryant, 181 F.4th 1013 (10th Cir. 2026): Anchored relevance (Rule 401) and harmless-error principles (substantial rights) within the Tenth Circuit’s modern framing.
  • Old Chief v. United States, 519 U.S. 172 (1997): Used for probative value’s attributes and the general evidentiary idea that “probative value” is not a label but a comparative assessment in context.
  • U.S. Aviation Underwriters, Inc. v. Pilatus Bus. Aircraft, Ltd., 582 F.3d 1131 (10th Cir. 2009): Cited for the proponent’s burden: the officers, as proponents of the contested evidence, had to establish admissibility.

B. Character evidence, propensity, and the special risk in civil-rights trials

  • McCue v. Kan. Dep't of Hum. Res., 165 F.3d 784 (10th Cir. 1999): Stated the basic prohibition against inferring character from an act and then inferring action from character—propensity reasoning—rejecting defendants’ “pattern-of-behavior” rebranding.
  • Michelson v. United States, 335 U.S. 469 (1948): Used for the enduring rationale behind excluding character evidence: not because character is irrelevant, but because it overpersuades and misleads. Michelson supplied the opinion’s “specter” theme—character proof’s gravitational pull away from the issues actually being tried.
  • People v. Zackowitz, 172 N.E. 466 (N.Y. 1930): Invoked for the danger that juries may decide against a party “irrespective of liability” when character evidence suggests the party is simply “bad.”
  • Barber v. City of Chicago, 725 F.3d 702 (7th Cir. 2013): A key comparator: a § 1983 plaintiff’s later conviction was admitted as a supposed supervening cause of emotional distress; the Seventh Circuit reversed under Rule 403. Cronick adopts Barber’s civil-rights-specific insight: unsympathetic plaintiffs versus “guardians of the community,” making prejudice especially acute.
  • Nelson v. City of Chicago, 810 F.3d 1061 (7th Cir. 2016) and Smith v. Balt. City Police Dept., 840 F.3d 193 (4th Cir. 2016): Reinforced that unrelated arrests/encounters are often irrelevant or minutely probative on damages and can be outcome-distorting; Smith also showed reversal can occur even with limiting instructions.
  • Outley v. City of New York, 837 F.2d 587 (2d Cir. 1988): Used twice: (i) the “perpetual litigant” prejudice and (ii) the practical reality that repeated prejudicial references in a short trial can require reversal.

C. Impeachment limits and “extrinsic evidence”

  • United States v. Flaming, 133 F.4th 1011 (10th Cir. 2025): Provided the Tenth Circuit’s requirement for impeachment by contradiction: an adequate foundation and identification of inconsistent testimony. The officers could not point to trial testimony the clips actually contradicted.
  • United States v. Craig, 953 F.3d 898 (6th Cir. 2020): Supported the conclusion that Rule 608(b) does not authorize playing a video as extrinsic evidence to attack character for truthfulness.

D. Limiting instructions and waiver

  • Rios v. Bigler, 67 F.3d 1543 (10th Cir. 1995): Cited for waiver: Cronick did not request a limiting instruction, but the panel explained that waiver does not immunize a district court’s “blatant” Rule 403 failure.

E. A counterpoint case—and why Cronick is different

  • Udemba v. Nicoli, 237 F.3d 8 (1st Cir. 2001): Defendants’ best analogy: some unrelated arrest evidence allowed on emotional-distress damages and affirmed with deference to “on-the-spot” balancing. Cronick distinguished Udemba because the district court here made pretrial rulings (not a momentary trial call), allowed extensive extrinsic video, and the volume/viscerality dominated the trial.
  • United States v. Villa-Guillen, 102 F.4th 508 (1st Cir. 2024): Quoted for the “rare and extraordinarily compelling circumstances” phrasing—ironically used to justify reversal here as one of those rare cases.

F. Rule 37 adverse-inference instructions and instruction review standards

  • Vitamins Online, Inc. v. Heartwise, Inc., 71 F.4th 1222 (10th Cir. 2023): Provided the abuse-of-discretion standard for choosing an adverse-inference instruction.
  • Packard v. City & County of Denver, 173 F.4th 1247 (10th Cir. 2026): Provided the de novo standard for whether instructions as a whole accurately stated law and framed factual issues properly. The challenged instruction was improper because it shifted the jury’s focus to “other bad acts” and invited propensity.
  • Garceau v. Woodford, 275 F.3d 769 (9th Cir. 2001): Used by analogy to flag an instruction as improper when it invites propensity reasoning (even though Garceau was reversed on other grounds by the Supreme Court).

G. Harmless error in civil cases

  • Colo. Mont. Wyo. State Area Conf. of NAACP v. Smith, 180 F.4th 1266 (10th Cir. 2026): Provided the “holistic” harmless-error approach and “grave doubt” standard for whether the error substantially influenced the verdict.

H. Monetary sanctions and procedural fairness

  • Farmer v. Banco Popular, 791 F.3d 1246 (10th Cir. 2015): Set the abuse-of-discretion framework for attorney-fee sanctions, including errors of law and clearly erroneous findings.
  • Ehrenhaus v. Reynolds, 965 F.2d 916 (10th Cir. 1992) and Lee v. Max Int'l, LLC, 638 F.3d 1318 (10th Cir. 2011): Used to reject Cronick’s attempt to import dismissal-sanction factors into monetary sanctions analysis.
  • Marcantel v. Michael & Sonja Saltman Fam. Tr., 993 F.3d 1212 (10th Cir. 2021): Controlled the “written order governs” principle, defeating reliance on an oral remark arguably minimizing counsel wrongdoing.
  • Sun River Energy, Inc. v. Nelson, 800 F.3d 1219 (10th Cir. 2015): Defined due process for monetary sanctions as notice and full briefing opportunity—no evidentiary hearing required as a categorical matter.
  • King v. Fleming, 899 F.3d 1140 (10th Cir. 2018): Supported the allocation of burden: the sanctioned party must prove inability to pay; Cronick did not do so despite the court’s invitation.
  • Thomas E. Hoar, Inc. v. Sara Lee Corp., 900 F.2d 522 (2d Cir. 1990): Rejected the “ethical duty forced us” narrative; the court analogized that ethical obligations do not justify obstructive litigation conduct.

3.2 Legal Reasoning

A. Rule 403: tiny permissible probative value versus intolerable prejudice

The opinion proceeds in a disciplined Rule 403 sequence: identify the proponent’s theory of relevance, measure probative value, measure unfair prejudice, then balance. The officers offered four probative theories, but only one survived:

  • Impeachment by contradiction failed because the officers did not identify specific trial testimony contradicted by the clips (per United States v. Flaming).
  • “Pattern of behavior” was simply propensity by another name and barred by Rule 404(a)(1) as described in McCue v. Kan. Dep't of Hum. Res.
  • General credibility/character for truthfulness was blocked by Rule 608(b)’s extrinsic-evidence bar (supported by United States v. Craig).
  • Emotional-distress damages was the only potentially legitimate ground, but the court found it weak because Cronick did not present a “generally disabling long-term trauma” case and did not claim generalized fear of police—tracking Barber v. City of Chicago, Nelson v. City of Chicago, and Smith v. Balt. City Police Dept.

On prejudice, the panel emphasized three distinct dangers: (1) propensity reasoning; (2) verdict based on disliking the plaintiff rather than on liability; and (3) salience—“colorful and memorable” details displacing the real issues. The opinion’s point is not merely that the videos were harsh; it is that they were structurally misused—their persuasive force depended on the forbidden inference “she does this kind of thing, therefore she did it here.”

B. Rule 37 “established facts” cannot function as propensity instructions

The court accepted that Rule 37 allows instructions deeming facts established, but held that the first adverse-inference instruction crossed a line: stating that Cronick’s recordings demonstrate she “engages in behavior that is disruptive to police business” effectively told the jury she “routinely” commits conduct closely resembling the obstruction theory the jury was asked to evaluate for probable cause.

By reading the adverse-inference instruction alongside the court’s explanation of obstruction (“combination of statements and acts”), the panel concluded the instruction invited the jury to reason: she disrupts police in other situations, therefore she disrupted police here—an instruction-level form of propensity reasoning incompatible with a fair framing of the factual issues (per Packard v. City & County of Denver).

C. Harmless error: why the court found “grave doubt”

The panel’s harmlessness analysis is grounded in trial dynamics: a short trial; the videos consumed significant cross-examination time; inflammatory questioning between clips; and the defense closing argument “capped off” by urging the jury to use the videos to decide “these claims.” Because liability turned largely on whether the jury believed Cronick’s account over the officers’ account, the “highlight reel” of unrelated behavior predictably impaired her ability to be believed.

The opinion stresses that this was not a case where objective video evidence “blatantly contradicted” Cronick’s version; a reasonable jury could have sided with her. That closeness made the evidentiary and instruction errors especially consequential.

D. Monetary sanctions: affirmed under Rule 37(b)(2)(C)

In contrast to the trial errors, the panel upheld the fee sanction because the record supported willful noncompliance with discovery orders and because Cronick’s procedural objections failed under governing standards.

  • Relevance/prejudice: the panel noted Cronick ignored other deleted materials (e.g., statements about the arrest), which could matter at trial.
  • Fault: the district court’s findings that Cronick had (or could obtain) access were not clearly erroneous.
  • Counsel responsibility: the written order controlled and incorporated findings that counsel “enabled” disobedience (per Marcantel).
  • Ethics/due process: the court rejected the claim that sanctions forced ethical violations and found notice plus briefing sufficient process (per Sun River Energy, Inc. v. Nelson).
  • Indigency: inability-to-pay is the sanctioned party’s burden; Cronick did not supply proof despite an invitation (per King v. Fleming).

3.3 Impact

The decision’s practical significance is twofold.

  1. In § 1983 trials, “other police encounters” evidence faces heightened Rule 403 skepticism when offered to undermine credibility or emotional damages. Cronick reinforces that courts must not allow defendants to repackage propensity as “pattern,” “demeanor,” or “credibility,” especially where the evidence is vivid, voluminous, and only marginally tied to a pleaded damages theory.
  2. Rule 37 adverse-inference instructions must be narrowly cabined to avoid establishing “character” facts. “Established facts” that a party generally behaves disruptively risk functioning as an evidentiary shortcut to liability—precisely what character rules and fair-trial framing forbid.

For trial courts, Cronick serves as a caution that limiting prejudice is not merely a matter of time limits (e.g., “30 minutes of clips”). The mode of proof (extrinsic video), the number of instances, and the narrative it constructs can overwhelm the merits. For litigants, it provides a roadmap to challenge “copwatch/audit” materials used as smear evidence and to challenge discovery sanctions that purport to establish broad behavioral generalizations.

4) Complex Concepts Simplified

  • Rule 403 (Unfair prejudice balancing): Even relevant evidence can be excluded if it is likely to cause the jury to decide on an improper basis (like dislike of a party) or to get distracted from the real issues.
  • Character / propensity reasoning: The forbidden logic “she behaved badly before, so she probably behaved badly this time.” Courts exclude this not because it is irrelevant, but because it is too persuasive in the wrong way.
  • Rule 608(b) (Extrinsic evidence bar): You usually can’t prove a witness is untruthful by introducing outside proof of specific bad acts; at most, you can ask limited questions, but you can’t “play the video” to prove the act.
  • Adverse-inference / Rule 37 “established facts”: A court can remedy discovery violations by telling the jury to treat certain facts as true, but the sanction must be “just” and cannot effectively direct the jury to infer liability from general bad character.
  • Harmless error: An appellate court will not order a new trial for every mistake—only when the mistake likely affected the outcome or creates serious doubt about the verdict’s reliability.
  • Joint and several monetary sanctions: The court can order both client and counsel to pay discovery-related fees where both are responsible; either may be collected from for the full amount (subject to allocation between them).

5) Conclusion

Cronick establishes a clear warning: in § 1983 trials, unrelated “copwatch” encounters are exceptionally prone to devolve into impermissible character trials, and Rule 403 must be enforced to prevent propensity-driven verdicts. The opinion also draws a boundary around Rule 37 “adverse inference” instructions: sanctions cannot be framed as broad behavioral truths that invite jurors to convict a party by disposition rather than by the incident in suit.

At the same time, Cronick affirms that serious discovery noncompliance can justify substantial monetary sanctions—against parties and, where warranted, counsel— when due process is provided through notice and briefing and when inability-to-pay is not substantiated.