Following the Japanese attack on Pearl Harbor on December 7, 1941, President Franklin D. Roosevelt issued Executive Order 9066, which permitted the military to circumvent the constitutional safeguards of American citizens in the name of national defense.
The order set into motion the exclusion from certain areas, and the evacuation and mass incarceration of 120,000 persons of Japanese ancestry living on the West Coast, most of whom were U.S. citizens or legal permanent resident aliens.
These Japanese Americans, half of whom were children, were incarcerated for up to 4 years, without due process of law or any factual basis, in bleak, remote camps surrounded by barbed wire and armed guards.