"Roosevelt's executive order was fueled by

anti-Japanese sentiment among farmers who competed against Japanese labor,

politicians who sided with anti-Japanese labor constituencies

and the general public, whose frenzy was heightened by the Japanese attack of Pearl Harbor.

More than two thirds of the Japanese who were interned in the spring of 1942 were citizens of the United States." (source)

American citizens and government reacted poorly and unpatriotically. They used the war as an excuse to violate the fundamental rights of several of their fellow citizens.