Retaliatory Arrest Under Nieves v. Bartlett: “Similarly Situated” Comparators Must Share the Arrest-Generating Conduct

Introduction

This Sixth Circuit decision addresses the “narrow” exception to the general rule that probable cause defeats First Amendment retaliatory-arrest claims. The case arose from a late-night shooting investigation in Ypsilanti Township, Michigan. Deputies established a “rudimentary perimeter” around a residence where the shooter was believed to have fled. Daniel and Shatina Grady—unbeknownst to officers, the parents of the homeowner—approached inside that perimeter while recording on their phones and refused repeated commands to back up. Officers arrested them for obstruction/resisting under Michigan Compiled Laws § 750.81d(1). The Gradys were later acquitted in state criminal court, then pursued civil claims under 42 U.S.C. § 1983, including First Amendment retaliation.

The district court held that probable cause existed for obstruction (based on a knowing failure to comply with a lawful command) but nevertheless allowed the First Amendment retaliatory-arrest claim to proceed under the Nieves v. Bartlett exception, reasoning that other nearby onlookers were not arrested. The Sixth Circuit reversed, clarifying what it means for a “similarly situated” comparator to satisfy the Nieves exception.

Key Issues

• Whether the Gradys could invoke the Nieves v. Bartlett exception despite the existence of probable cause.
• Whether bystanders who stood outside the police perimeter and did not defy police orders could be “similarly situated” to arrestees who approached the perimeter and repeatedly refused lawful commands.
• Whether the Gradys produced any “objective evidence” (beyond flawed comparators) that officers “typically exercise their discretion not to” arrest for the conduct at issue.

Summary of the Opinion

The Sixth Circuit held that the Gradys’ retaliatory-arrest claim fails as a matter of law because probable cause existed and the Gradys could not satisfy the Nieves exception. The court emphasized:

• The Gradys did not challenge the district court’s probable-cause finding, so probable cause was treated as established.
• The Gradys’ “filming” retaliation theory fails because their proposed comparators were also filming; thus the comparators were not “not engaged in the same sort of protected speech.”
• The “critical speech” theory fails because the proposed comparators were not “otherwise similarly situated”: they stayed outside the perimeter and were not ordered to move; they did not engage in the conduct that generated probable cause for the Gradys’ arrest (approaching the perimeter and defying repeated lawful commands).
• The court reversed the denial of qualified immunity and remanded with instructions consistent with its holding that Nieves bars the claim in the presence of probable cause absent qualifying objective evidence.

Analysis

Precedents Cited

Nieves v. Bartlett, 587 U.S. 391 (2019)

Nieves is the central governing authority. It sets the default rule that probable cause “generally defeat[s]” retaliatory-arrest claims, while carving a “narrow” exception permitting a claim to proceed when the plaintiff produces “objective evidence” that he was arrested while “otherwise similarly situated individuals not engaged in the same sort of protected speech had not been.” The Sixth Circuit treated this case as a dispute over the exception’s scope, particularly the comparator component and its causation function.

Gonzalez v. Trevino, 602 U.S. 653 (2024) (per curiam)

Gonzalez refined how plaintiffs may satisfy Nieves. It confirmed the exception is “slim,” but also rejected an overly rigid demand for “virtually identical and identifiable comparators,” explaining that objective evidence can include enforcement-history data (as in Gonzalez itself). The Sixth Circuit used Gonzalez to:

• Confirm appellate jurisdiction to decide the Nieves-exception question as a “pure question of law.”
• Emphasize that the Gradys could have offered other objective evidence (e.g., non-enforcement history), but did not; they relied solely on comparators.
• Distinguish between rejecting a “virtually identical comparators” requirement and still insisting on a baseline similarity: the comparator must share the arrest-generating conduct.

Hartman v. Moore, 547 U.S. 250 (2006)

Hartman supplied the “powerful evidentiary significance” framing for probable cause in retaliation cases—there, retaliatory prosecution; here, retaliatory arrest. The Sixth Circuit leveraged this logic to reinforce why probable cause ordinarily severs the causal chain between speech and arrest.

Reichle v. Howards, 566 U.S. 658 (2012)

Reichle contributed two important ideas adopted here: (1) speech can be a “wholly legitimate consideration” in arrest decisions because it may evidence a crime or threat, and (2) when probable cause exists, retaliatory-arrest doctrine becomes difficult due to the speech-arrest overlap. The opinion also relied on Reichle and Greenlaw v. United States, 554 U.S. 237 (2008), for the procedural point that the Gradys’ failure to challenge probable cause on appeal made that issue effectively settled for purposes of the Sixth Circuit’s analysis.

Lozman v. Riviera Beach, 585 U.S. 87 (2018)

Lozman is referenced to note an alternative retaliation pathway—an official policy of retaliation—distinct from the Nieves comparator exception. The court expressly stated the Lozman exception does not apply.

Atwater v. City of Lago Vista, 532 U.S. 318 (2001)

Cited (through Nieves) to illustrate how minor offenses are widespread, and the discretion not to arrest for them creates the risk that some officers may “exploit the arrest power” to suppress speech—precisely what the Nieves exception targets.

Crawford-El v. Britton, 523 U.S. 574 (1998)

Used (again through Nieves) for the premise that improper motive is “easy to allege and hard to disprove,” supporting objective constraints like probable cause and objective evidence requirements.

Thaddeus-X v. Blatter, 175 F.3d 378 (6th Cir. 1999) (en banc) (per curiam)

Cited for the Sixth Circuit’s general First Amendment retaliation framework: the plaintiff must show protected conduct was a motivating factor for adverse action. The opinion positions Nieves as a specialized overlay for arrests that changes how courts handle causation in light of probable cause.

Mt. Healthy City Sch. Dist. Bd. of Educ. v. Doyle, 429 U.S. 274 (1977)

Cited for the burden-shifting concept in retaliation doctrine (legitimate, non-retaliatory reasons can defeat causation). The court explained that satisfying the Nieves exception “opens the door” to this traditional framework.

Brown v. City of Albion, 136 F.4th 331 (6th Cir. 2025)

This is the key Sixth Circuit comparator analysis precedent deployed to correct the district court’s approach. The opinion quoted and applied Brown to insist that the plaintiff must show comparable enforcement outcomes for the “particular type of behavior” at issue and must provide evidence suggesting others “violated this same provision and not been charged” or, more generally, that officers typically do not arrest for that conduct.

Hartman v. Thompson, 931 F.3d 471 (6th Cir. 2019)

Used to reinforce the same point: plaintiffs must supply objective evidence that others were allowed to engage in “similarly disruptive activities without arrest.” The Sixth Circuit treated Hartman as consistent with focusing on the arrest-generating conduct, not merely the presence of other people in the vicinity.

Stanley v. Bocock, 160 F.4th 573 (4th Cir. 2025)

Cited to show cross-circuit convergence: the comparator inquiry asks whether the arrestee was treated differently than others “who engaged in the same conduct.”

Procedural/Jurisdictional and Qualified Immunity Authorities

• Mitchell v. Forsyth, 472 U.S. 511 (1985): denial of qualified immunity is appealable under the collateral-order doctrine.
• Brown v. Chapman, 814 F.3d 436 (6th Cir. 2016): interlocutory review limited to issues of law.
• DiLuzio v. Village of Yorkville, 796 F.3d 604 (6th Cir. 2015) and Scott v. Harris, 550 U.S. 372 (2007): appellate court generally accepts plaintiff-favorable facts unless blatantly contradicted by the record.
• District of Columbia v. Wesby, 583 U.S. 48 (2018): two-part qualified-immunity framework (violation + clearly established).
• Frenchko v. Monroe, 160 F.4th 784 (6th Cir. 2025): reiterated that courts may end at “no constitutional violation.”

Michigan Statute and State Authority

• Mich. Comp. Laws § 750.81d(1) and § 750.81d(7)(a): obstruction includes a knowing failure to comply with a lawful command.
• People v. Corr, 788 N.W.2d 860 (Mich. Ct. App. 2010) (per curiam): cited for obstruction-by-failure-to-comply principles.

Legal Reasoning

1) Probable Cause as the Default Barrier

The Sixth Circuit accepted the district court’s unchallenged finding that probable cause supported the arrests for obstruction under § 750.81d(1), based on the Gradys’ knowing refusal to follow lawful “back up” commands issued to enforce a safety perimeter during an active shooting investigation.

With probable cause in place, Nieves v. Bartlett supplies the default rule: probable cause “generally defeat[s]” the retaliatory-arrest claim, because it tends to break the causal inference that speech motivated the arrest.

2) The Comparator Requirement Must Track the Arrest-Generating Conduct

The opinion’s core doctrinal contribution is its clarification of what “otherwise similarly situated” means in practice. The district court treated the non-arrest of across-the-street neighbors as sufficient because they were present, were filming, and were not on the targeted property. The Sixth Circuit rejected this as a “false equation”:

• The Gradys created probable cause by (a) entering the perimeter and (b) refusing repeated lawful orders to step back.
• The neighbors did neither: they stayed outside the perimeter, were given no orders, and engaged in no comparable obstructive conduct.

Because the neighbors did not engage in the conduct that supported arrest, their non-arrest “proves nothing” about selective enforcement among lawbreakers—the causation concern Nieves is designed to test. In other words, Nieves comparators are not about who is nearby; they are about who is similarly subject to arrest discretion for the same kind of conduct.

3) Two Protected-Activity Theories, Both Failing the Nieves Exception

The district court analyzed two protected activities: filming and criticism.

• Filming: The comparator theory fails by the exception’s plain terms because the neighbors were also filming; the Gradys therefore could not show they were arrested while others “not engaged in the same sort of protected speech” were not.
• Criticism: Even assuming the Gradys criticized officers and neighbors did not, the neighbors were not similarly situated because they did not engage in the arrest-generating conduct (approaching the perimeter and defying orders). The court thus refused to use “superficial similarities” (physical presence, distance, filming) to satisfy a causation-focused comparator test.

4) The Court’s Deliberately Limited Holding

The Sixth Circuit explicitly avoided defining the outer bounds of similarity (same statute, same severity, comparable safety risks, etc.). Instead, it articulated a minimum: a valid comparator must have engaged in similar conduct to that which led to the claimant’s arrest. The Gradys’ evidence did not meet that baseline.

Impact

1) Narrowing (and Clarifying) Comparator-Based Use of the Nieves Exception

This decision meaningfully constrains attempts to satisfy Nieves with generic “nearby bystanders weren’t arrested” evidence. Plaintiffs must identify non-arrested individuals who were comparably arrest-eligible—i.e., who engaged in similar conduct that supplied probable cause and then were spared by discretionary enforcement.

2) Greater Emphasis on “Objective Evidence” Beyond On-Scene Comparators

The opinion’s engagement with Gonzalez v. Trevino signals that plaintiffs may increasingly need enforcement-history evidence (non-enforcement surveys, departmental statistics, policy/practice proof) where comparator matching is unavailable—especially for offenses that are tightly coupled to safety-sensitive, scene-specific commands (e.g., perimeter control during investigations).

3) Practical Consequences for Policing and Protest/Recording Contexts

• For law enforcement: strengthens the ability to manage perimeters and issue safety commands without facing extended retaliatory-arrest litigation whenever speakers are arrested with probable cause.
• For civil-rights plaintiffs: raises the evidentiary bar at summary judgment when probable cause exists; the plaintiff’s “similarly situated” proof must be tied to the conduct prompting arrest, not merely to the presence of protected speech and non-arrest of others in the vicinity.
• For district courts: provides a clearer analytic sequence: identify the arrest-generating conduct (the conduct that created probable cause), then ask whether non-arrested persons engaged in meaningfully similar conduct but were treated differently.

Complex Concepts Simplified

Probable Cause

“Probable cause” is the objective standard asking whether facts known to the officer would warrant a reasonable belief that a person committed a crime. Under Nieves v. Bartlett, probable cause usually ends a retaliatory-arrest claim because it provides a strong, non-retaliatory reason for the arrest.

Retaliatory Arrest and the Nieves Exception

A retaliatory-arrest claim alleges: “I was arrested because of my protected speech.” Nieves says that if police had probable cause, that claim usually fails—unless the plaintiff offers objective proof that similarly situated non-speakers (or those not engaging in the same protected speech) typically aren’t arrested for the same conduct.

“Objective Evidence”

“Objective evidence” means proof that does not depend on guessing an officer’s subjective motive—such as comparator evidence (others engaged in the same arrest-eligible conduct but were not arrested) or enforcement-history data (showing the offense is almost never enforced by arrest).

Qualified Immunity (and Why the Court Didn’t Need Step Two)

Qualified immunity protects officers unless they violated a constitutional right and the unlawfulness was clearly established. Here, the Sixth Circuit resolved the case at step one (no constitutional violation) because Nieves barred the claim once probable cause existed and the exception was unsatisfied.

Collateral-Order Doctrine (Interlocutory Appeal)

Normally only final judgments are appealable, but a denial of qualified immunity can be appealed immediately to the extent it turns on legal issues. The Sixth Circuit used that authority to decide the legal sufficiency of the Gradys’ Nieves-exception showing.

Conclusion

The Sixth Circuit’s decision reinforces Nieves v. Bartlett’s core tradeoff: probable cause ordinarily defeats retaliatory-arrest claims, and the exception remains “slim.” The principal doctrinal clarification is that comparator evidence must track the conduct that actually generated probable cause. Law-abiding bystanders who never approached a police perimeter or defied police commands are not “otherwise similarly situated” to arrestees whose refusal to comply created probable cause—no matter how close they stood, whether they recorded, or whether they criticized police. Going forward, litigants and courts in the Sixth Circuit should expect Nieves exception arguments to turn on whether non-arrested comparators engaged in the same arrest-eligible conduct (or whether other objective, non-comparator evidence shows arrests for the conduct are atypical).