Hitler engaged in a decades long persecution of Jews, and the purpose of the concentration camps was to provide a "final solution" by exterminating them. Over 7 million were killed.
Roosevelt allowed the internment of Japanese Americans after the US was sneak-attacked by their home country without provocation. He and his military commanders felt that Japanese Americans with easy access to the cost might assist the Japanese government with an invasion, so they moved them away from the coast. The
I'm not denying that racism played a role in making the US Government regard Japanese with suspicion (while not so regarding German Americans, for example.) I AM saying that there is no evidence that there was ever any intent to kill Japanese Americans en masse. I am not defending the internment, I AM saying that it wasn't genocidal.