Japanese American internments refer to the forced relocation and incarceration of around 120,000 Japanese Americans during World War II, primarily on the West Coast of the United States. This action was fueled by wartime hysteria and racial prejudice following the attack on Pearl Harbor in December 1941. The U.S. government justified this violation of civil liberties as a national security measure, resulting in the loss of homes, businesses, and freedom for thousands of innocent individuals.