Tule Lake
Tule Lake was an internment camp in northern California used in the Japanese-American internment during World War II. It was one of the largest and most notorious of the camps, and did not close until after the war, in 1946. Internees from other camps who refused a vow of undivided loyalty to the U.S. were sent to this "Segregation Camp". Anti-American sentiment was high, with several demonstrations against the internment policy and many residents renouncing their U.S. citizenship.
Starting in 1974, Tule Lake was the site of several pilgrimages by activists calling for an official apology from the U.S. government. This Redress Movement culminated in the Civil Liberties Act of 1988.