In 1944 the Supreme Court upheld the internment of about 120,000 people of Japanese descent, most of them U.S. citizens, on a claim of 'military necessity' the government knew was false. The episode covers Fred Korematsu's challenge, Justice Murphy's dissent, the suppressed intelligence, the 1983 vacatur, the 1988 redress, and the Court's 2018 admission that Korematsu was gravely wrong.
Scholars debate whether Korematsu was truly overruled in 2018 or whether the deference at its core survived. They also argue how much courts should defer to military judgment in an emergency, and how much the suppressed evidence would have changed the outcome.