On This Day in History January 31, 1976: Ernesto Miranda (March 9, 1941 - January 31, 1976,) whose conviction on kidnapping, rape, and armed robbery charges based on his confession under police interrogation (which was the basis for the United States Supreme Court landmark case of Miranda v. Arizona 384 U.S. 436 (1966) died from injuries of being stabbed in a bar fight in Phoenix, Arizona.
The United States Supreme Court handed down its decision in Miranda v. Arizona 384 U.S. 436 (1966), establishing the principle that all criminal suspects must be advised of their rights before interrogation. Miranda had not been notified of any and all rights. Today, this procedure of notifying someone who has been arrested of their rights is called being Mirandized, and is considered to be standard police procedure.
The story of Ernesto Miranda from the Policeone website
Facts and Case Summary - Miranda v. Arizona from the United States Courts.gov
What Are Your Miranda Rights? from MirandaWarning.org