Japanese American internment during World War II was a dark chapter in U.S. history. Following Japan's attack on Pearl Harbor, widespread fear and racism led to the forced relocation of 120,000 Japanese Americans, two-thirds of whom were U.S. citizens. President Roosevelt's Executive Order 9066 authorized the military to remove Japanese Americans from the West Coast. Families were uprooted and sent to remote internment camps, facing harsh living conditions and loss of freedom. The internment's impact on Japanese American communities was devastating and long-lasting.