Why is the Japanese American internment one of the greatest civil rightd violations in history?

Answer 1

According to the constitution it is illegal for anyone (a non-citizen included) to be imprisoned without charging them and having evidence against them. You must also provide the arrested (which the Japanese were not) persons with a lawyer at the expense of the state. You also cannot just enter a person's home if you are a military person and remove them from their home or take it over. Further more you cannot take their possessions when they have not been tried and convicted.

The Japanese were taken against their will, never charged, never provided attorneys and had their homes, possessions and businesses from them. They tried for decades to be repaid by the US. Most were dead before the US paid them paltry sums of money. They were taken as an over reaction to the Pearl Harbor Bombing. They were suspected of ALL being spies, considered guilty and never allowed to prove themselves innocent prior to being interned.