Which United States Supreme Court case held that persons accused of crimes must be advised of their Fifth and Sixth Amendment rights upon their arrest?

The case that held individuals accused of crimes must be informed of their Fifth and Sixth Amendment rights upon arrest is Miranda v. Arizona. This landmark decision established what are now known as "Miranda rights," which require that individuals in custody be informed of their rights to remain silent, to be aware that anything they say can be used against them in court, and to have an attorney present during questioning.

The necessity for this advisory stems from the Court's concern about the potential for coercive interrogations that could lead to self-incrimination, which the Fifth Amendment aims to protect against. Additionally, the Sixth Amendment guarantees the right to legal counsel, ensuring that individuals are supported during the legal process. The ruling emphasized the importance of protecting these rights at the point of arrest, thereby reinforcing the core principles of due process within the American judicial system.

Understanding this case is vital for grasping how the legal system seeks to safeguard the rights of individuals accused of crimes, ensuring that they are treated fairly and with respect for their constitutional protections.