Both camps, whether the Japanese were the one's captured or the Americans, both happened within WW2. They were both during a time of war, with many people being influenced by the environment around them. Keeping prisoners of war from the opposing side is a common thing during a wartime, but this does not excuse some of the things done. The American's had a justified reason to place the Japanese in the internment camps, they were trying to keep their country safe, they feared all American - Japanese citizens were working with the enemy as spies. Otherwise the Japanese did not have a justifiable reason to keep American soldiers, besides to withhold them from joining the war again, the way they were treated within the camp was in no way justified. The Americans were forced into hard labour and were both mentally and physically traumatised after the end of the war, some still facing repercussions up until their deaths.