Miranda v. Arizona (1966)
The Court held that if police do not inform people they arrest about certain constitutional rights, including their Fifth Amendment Right Against Self-Incrimination, then their confessions may not be used as evidence at trial. The Court referenced Mapp v. Ohio (1961) as the basis for excluding the confessions. The ruling was also based on the assertions that the Fifth Amendment privilege is “fundamental to our system of constitutional rule” and that to inform the accused of their rights is “expedient [and] simple.”
The case touched on constitutional principles including justice and responsibility.