After Executive Order 9066 was signed by President Franklin Delano Roosevelt, people were incarcerated in inadequate and dehumanizing camps. Even once the detention program ended, things were still incredibly difficult for people after their release.
Roughly 122,000 Japanese immigrants and American citizens of Japanese ancestry were removed from their homes on the West Coast and incarcerated for much of the U.S. involvement in WWII. About two-thirds of them were U.S. citizens.
Attica Correctional Facility originally opened in rural, upstate New York in 1931. In 1971, conditions at the prison were at a point where they were humiliating, dehumanizing and counterproductive to rehabilitation.