About two-thirds of all Japanese Americans interned at Manzanar were American citizens by birth. President Franklin Roosevelt's executive order took freedom away from these American citizens without a fair due process. This was because of people's false belief that everyone of Japanese descent had something to do with this, and a somewhat false fear that the Japanese army was plotting something else and would attack America again.
Manzanar’s internees suffered from the harsh desert environment. Temperatures were as high as 110ºF in the summer and frequently dropped below freezing in the winter. This, combined with "The temporary, tar paper-covered barracks, the guard towers" showed how badly the Japanese Americans were treated in the internment camps.
This was also a form of racism because they were judged because of how they looked and a false belief that they would do something wrong. They were also judged for something their "mother country" did, and they may not have agreed with what had happened.