In the landmark case of Miranda v. Arizona (1966), the U.S. Supreme Court ruled that individuals taken into police custody must be informed of their rights before being interrogated. This decision established the requirement for law enforcement to inform suspects of their right to remain silent and their right to an attorney, known as Miranda rights. The case arose when Ernesto Miranda was arrested and confessed to a crime without being informed of these rights. His confession was later deemed inadmissible in court, leading to the Supreme Court's decision that reinforced the protection of the Fifth Amendment against self-incrimination.