What is "stop and frisk," exactly, and what does it have to do with the NYPD? Starting in the 1970s, in the hope of curbing street crime, New York City began encouraging its officers to stop people they deem suspicious, to question them, and, if there is adequate reason to suspect illegal activities, to pat them down for things like drugs and weapons. This type of police activity has been upheld in the past: In a landmark 1968 case, Terry v. Ohio, a police officer detained three men without a warrant, suspicious that they were casing a local convenience store for a hold-up. One of the men had a revolver, and the Supreme Court ruled that the warrantless search was constitutional because the cop had reasonable suspicion to believe the men were about to commit a crime.
