The statement that characterizes the opposition is: they believed that the inmates should not help in the war effort because the internment of the Japanese was unfair.
Recall that the attack on Pearl Harbor increased the racial differences between Americans and the Japanese. President Roosevelt authorized the creation of military areas; and from there, they moved again to other recently built sites. One of them was Manzanar Center, located in Owens Valley, California, where many of the inmates of Manzanar opposed anyone who chose to work for the government making war materials.