[T]he effect of the religious freedom Amendment to our Constitution was to take every form of propagation of religion out of the realm of things whic… - Robert H. Jackson

The power of citizenship as a shield against oppression was widely known from the example of Paul's Roman citizenship, which sent the centurion scurrying to his higher-ups with the message: "Take heed what thou doest: for this man is a Roman."

A Government to perform even a minimum of service to its people, must take steps to suppress avarice, to strike down privately built-up schemes of economic exploitation or oppression, to uproot privilege, and to assure justice and economic opportunity to the masses.

Korematsu was born on our soil, of parents born in Japan. The Constitution makes him a citizen of the United States by nativity and a citizen of California by residence. No claim is made that he is not loyal to this country. There is no suggestion that apart from the matter involved here he is not law abiding and well disposed. Korematsu, however, has been convicted of an act not commonly a crime. It consists merely of being present in the state whereof he is a citizen, near the place where he was born, and where all his life he has lived.
A citizen's presence in this locality, however, was made a crime only if his parents were of Japanese birth. Had Korematsu been one of four - the others being, say, a German alien enemy, an Italian alien enemy, and a citizen of American-born ancestors, convicted of treason, but on parole - only Korematsu's presence would have violated the order. The difference between their innocence and his crime would result, not from anything he did, said, or thought, different than they, but only in that he was born of different racial stock.
Now, if any fundamental assumption underlies our system, it is that guilt is personal and not inheritable. Even if all of one's antecedents had been convicted of treason, the Constitution forbids its penalties to be visited upon him. But here is an attempt to make an otherwise innocent act a crime merely because this prisoner is the son of parents as to whom he had no choice, and belongs to a race from which there is no way to resign. If Congress in peace-time legislation should enact such a criminal law, I should suppose this Court would refuse to enforce it.