Today, as in ages past, we are not without tragic proof that the exalted power of some governments to punish manufactured crime dictatorially is the handmaid of tyranny. Under our constitutional system, courts stand against any winds that blow as havens of refuge for those who might otherwise suffer because they are helpless, weak, outnumbered, or because they are non-conforming victims of prejudice and public excitement. Due process of law, preserved for all by our Constitution, commands that no such practice as that disclosed by this record shall send any accused to his death. No higher duty, no more solemn responsibility, rests upon this Court, than that of translating into living law and maintaining this constitutional shield deliberately planned and inscribed for the benefit of every human being subject to our Constitution — of whatever race, creed or persuasion.

Hugo Black (1886-1971) American politician and jurist, US Supreme Court Justice (1937-71)

Chambers v. Florida, 309 U.S. 227, 241 (1940) [majority opinion]
    (Source)

Finding coerced confessions that led to the death penalty conviction of four Black men in Florida were a violation of the Due Process clause of the 14th Amendment.