Which case primarily dealt with the rights of criminal defendants regarding self-incrimination?

The case that primarily dealt with the rights of criminal defendants regarding self-incrimination is Malloy v. Hogan. This landmark decision established that the Fifth Amendment's protection against self-incrimination is applicable to state courts through the Fourteenth Amendment's Due Process Clause. In Malloy v. Hogan, the Supreme Court held that a defendant cannot be compelled to testify against themselves or provide information that could incriminate them during legal proceedings, thus solidifying the principle that the right against self-incrimination is a fundamental right applicable across all levels of the judicial system.

The relevance of this decision extends beyond mere acknowledgment of the right to remain silent; it set a crucial precedent for ensuring that defendants are aware of their rights and can exercise them without coercion. The affirmation of this right has had a lasting impact on legal procedures and the treatment of suspects and defendants in criminal cases.