Whether a fleeing suspect is seized under the Fourth Amendment when an officer makes a show of authority but the suspect does not submit.
Holding
No. A show of authority effects a seizure only when the person yields to it; without physical force, an unheeded command or pursuit is not a seizure.
Reasoning
The Fourth Amendment protects against unreasonable seizures, and a seizure of a person traditionally entails either the application of physical force to restrain movement or an assertion of authority that actually brings the person under the officer’s control. An officer’s pursuit may communicate an order to stop, but an order that the suspect ignores does not itself constitute a seizure.
At common law, an arrest could be completed by even slight physical touching undertaken with authority to arrest, even if the suspect then escaped. But where there is no touching, words or a show of authority alone complete an arrest only if the person submits. Hodari had not been touched and continued to run when he discarded the cocaine.
The Court accepted for purposes of decision that Pertoso’s pursuit was a show of authority. Still, the Fourth Amendment’s use of “seizure” does not naturally encompass an officer yelling or signaling for a fleeing person to stop when that person continues to flee. Hodari was therefore seized only when Pertoso tackled him.