Today in History: June 19, 1961

Unlawfully Seized Evidence Not Admissible In Criminal Trials

The U.S. Supreme Court rules that evidence obtained in violation of the Fourth Amendment’s protection against unlawful searches and seizures must be excluded from use in state as well as federal criminal trials. The case, Mapp v. Ohio, arose after police searched the home of Dollree Mapp without a warrant and seized incriminating evidence that resulted in her conviction and imprisonment.