You're right. That was an outrage. But that doesn't change the fact that the internment was also an outrage. Not the same outrage, but nobody here is saying that we're worse for the internment than the Japanese were for the death marches.
In this country, we don't hold people responsible for the actions of others. Nobody interned at the camps had anything to do with that. Nobody interned at the camps ever beheaded an American prisoner. Nobody interned at the camps ever put anyone on a death march.
Hitler gassed millions of Jews. That wasn't the fault of German-Americans. It was Hitler's fault.
Not Japanese Americans interned, who suffered for the sins of their brothers in Japan. Tuff luck!
In this country, we don't hold people responsible for the sins of their brothers. Or their fathers. Or their grandfathers. Or guys they went to high school with. Or anybody's sins but theirs.
The internment was un-American. "Tuff luck" to you.