In which case did the United States Supreme Court establish that subjects of custodial interrogation must be informed of their Constitutional rights?

The case in which the United States Supreme Court established that individuals subjected to custodial interrogation must be informed of their Constitutional rights is Miranda v. Arizona. This landmark decision arose from the necessity to protect the Fifth Amendment right against self-incrimination and the Sixth Amendment right to counsel.

In Miranda v. Arizona, the Court ruled that law enforcement must inform a suspect of their rights to silence and to an attorney before any questioning begins while in custody. This requirement is vital because it ensures that individuals are aware of their right not to provide self-incriminating testimony and have access to legal help. The failure to provide this warning can result in any statements made by the suspect being inadmissible in court.

This ruling has had a profound impact on law enforcement practices, ensuring that suspects are adequately protected under the Constitution during potentially coercive interrogation situations. The Miranda rights have become a staple of police procedure, further underscoring the importance of fair treatment within the criminal justice system.