Korematsu was a Japanese-American who challenged his arrest for refusing to report to internment camps during the second world war. The Supreme Court ruled that the War Department, not judges, should decide whether "military necessity" justified denying due process. His conviction was overturned in 1983 after it emerged that officials had suppressed assessments that Japanese-Americans posed no threat. The government apologised five years later.
A real friend isn't someone you use once and then throw away. A real friend is someone you can use over and over again.