Thompson v. Clark

In Thompson v. Clark, Larry Thompson was living in Brooklyn when police officers came to his home after a 911 call reported possible child abuse involving his infant daughter. According to the Supreme Court’s summary of the case, Thompson denied the accusation and refused to allow officers into the home without a warrant. The officers entered anyway, and Thompson was arrested.

Medical personnel examined the child and found no signs of abuse. Thompson was later charged with offenses connected to the incident, including resisting arrest and obstructing governmental administration. The charges were eventually dismissed, and the criminal case ended without a conviction. The record described by the Supreme Court did not require Thompson to show that the dismissal included a statement that he was innocent.

Thompson then filed a federal civil rights lawsuit under 42 U.S.C. § 1983. One of his claims was essentially a Fourth Amendment malicious-prosecution claim: he argued that he had been unreasonably seized through criminal legal process. The lower courts rejected that claim because they applied a rule requiring Thompson to show that the criminal case ended in a way that affirmatively indicated his innocence. Because the charges had simply been dismissed without that kind of affirmative statement, the lower courts held that he could not proceed.

The plain-English question in Thompson v. Clark was this: when a person sues officers under § 1983 claiming that he was unlawfully prosecuted in violation of the Fourth Amendment, what does he have to show about the way the criminal case ended?

More specifically, the Supreme Court had to decide whether the plaintiff must prove that the criminal case ended with some affirmative indication of innocence, such as an acquittal or a dismissal that expressly states the person was innocent, or whether it is enough to show that the case ended without a conviction.

For officers, the issue matters because many criminal cases end through dismissals, declined prosecutions, or other non-conviction outcomes that do not say much about guilt or innocence. The case asked whether those ordinary outcomes can satisfy the “favorable termination” element of a later Fourth Amendment malicious-prosecution-type claim.

The Supreme Court held that a plaintiff bringing this kind of Fourth Amendment claim under § 1983 does not have to show that the criminal prosecution ended with an affirmative indication of innocence. Instead, the plaintiff only has to show that the prosecution ended without a conviction.

That was the practical rule from Thompson v. Clark: for the favorable-termination requirement, a criminal case ending without a conviction is enough. The plaintiff does not need to produce a dismissal order or other record that expressly declares innocence.

The Court did not hold that Thompson automatically won his civil case. The decision addressed the favorable-termination element. A plaintiff still must prove the other required parts of the claim, which may include that the plaintiff was seized, that the seizure was tied to legal process, and that the prosecution lacked probable cause, depending on the claim and governing law. The Court’s ruling simply removed the extra requirement that the dismissal affirmatively indicate innocence.

Thompson v. Clark is not mainly a use-of-force case, even though it arose from a police response at a home and an arrest. Its main importance for police work is in the area of arrests, criminal complaints, and later civil litigation. Officers should understand that if a criminal case is dismissed or otherwise ends without a conviction, that outcome may satisfy the favorable-termination requirement for a later § 1983 Fourth Amendment claim.

That does not mean every dismissed case creates officer liability. A dismissal is not the same as proof that the officers violated the Constitution. The plaintiff still has to prove the rest of the claim. But after Thompson v. Clark, officers and agencies should not assume that a civil claim fails just because the dismissal paperwork does not say the suspect was innocent.

The practical takeaway is to focus on the front-end police work: the facts supporting entry, detention, arrest, charging decisions, and any statements used to start or continue criminal process. Reports, affidavits, body-camera evidence, and communications with prosecutors should accurately describe what officers knew at the time and why they acted. If probable cause existed, the documentation should make that clear. If facts changed, such as medical findings or witness recantations, those developments should be handled and documented accurately.

For supervisors and detectives, Thompson v. Clark reinforces the importance of reviewing cases for legal sufficiency and factual accuracy before criminal process is pursued or continued. The case does not require officers to predict whether prosecutors will later dismiss charges, but it does show that a later dismissal without conviction can leave the door open to a civil lawsuit. Good documentation and honest probable-cause analysis remain the best protection for both constitutional policing and later courtroom review.