Katz v. United States

Okay kiddo, so there was a man named Katz who was doing some illegal things on the phone. The police wanted to catch him, so they put a listening device on the outside of the phone booth he was using without getting a warrant. Katz got caught and arrested, but he argued that the police did something wrong because they didn't get a warrant. So, the case went to the Supreme Court to decide if it was okay for the police to listen without a warrant. The Supreme Court said that it was not okay because Katz had a reasonable expectation of privacy in the phone booth. This means that the police needed a warrant before they could listen to him. The decision changed how police could use listening devices in investigations, and it's an important case to remember when talking about privacy laws.