Free tool · Law Enforcement
When Is Police Use of Force Reasonable? The Graham Factors and Deadly Force
Excessive-force claims against police are judged under the Fourth Amendment’s objective reasonableness standard, from the viewpoint of a reasonable officer on the scene and not with hindsight. The Graham factors are the severity of the crime, whether the suspect poses an immediate threat to officers or others, and whether the suspect is actively resisting or trying to flee. Deadly force is reasonable only if the officer has probable cause to believe that the suspect poses a significant threat of death or serious physical injury, and a warning should be given where feasible (Tennessee v Garner). Force on a suspect who is already subdued is rarely justified. These are constitutional minimums: state law and departmental policy may restrict force further.
Tool · Use of Force Reasonableness Checker
The force is unlikely to be judged reasonable on these facts.
Severity of the crime: A minor offence weighs against significant force.
Immediate threat: No immediate threat: force is hard to justify.
Resisting or fleeing: Passive resistance (going limp, refusing to move) supports at most minimal force.
Less force available: Officers need not use the least intrusive means, but the availability of obvious, less forceful options and time to use them weighs against the force chosen.
- Excessive-force claims against officers in the course of an arrest or stop are judged under the Fourth Amendment’s objective reasonableness standard, from the perspective of a reasonable officer on the scene, and not with hindsight (Graham v Connor). The decision allows for split-second judgements in tense, rapidly evolving situations.
- Constitutional reasonableness is the minimum. Department policies, state law and criminal law can restrict force further, and an officer can face discipline, criminal charges or civil liability even when the force is arguably within the constitutional limit.
Applies the objective reasonableness standard for police force: the severity of the crime, the immediate threat and active resistance or flight (the Graham factors), and the special rule for deadly force (Tennessee v Garner). Invented facts; real cases turn on the details seen from the officer’s position at the time, and departments and states can set stricter rules. A teaching aid, not legal advice. Runs in your browser; nothing is stored or sent.
How to use it
- Choose the severity of the crime, the threat and the resistance.
- Choose the level of force used.
- Tick whether a warning was given, whether less force was available and whether the suspect was subdued.
- Read whether the force is likely reasonable, and why.
Common questions
Does the officer have to use the least force possible?
No, but obvious and readily available lesser options weigh in the reasonableness assessment.
Is force on a handcuffed person always unlawful?
Not always, but force that continues after resistance has ended is hard to justify and is a common basis for liability.
Does the tool decide a real case?
No. It uses invented facts. Real cases turn on the details as seen by the officer at the time and on the law of the circuit.
Learn the law behind the tool
This tool is part of our Law Enforcement course, with lectures, concept maps, flashcards, interactive exercises and a capstone case. Law Enforcement: Use of Force and Liability.
More free law tools
General information, simplified, mainly on American law, not legal advice. States and countries differ, and real cases turn on facts that a tool cannot capture.