Yep. Sane isn't the same as flawless. Locking up those Japanese Americans was a terrible mistake -- one that we subsequently apologized for, as a nation. But it was a mistake that was easy to understand, in context. We were at war with a superpower that had destroyed a good portion of our navy and that, along with its allies, theoretically threatened our very existence. In that context, paranoia was almost unavoidable, and so it shouldn't be surprising that we overreacted by deciding to lock up Japanese Americans for a time, while we were fighting the nation of Japan. I'm not trying to justify it -- just saying that when you put yourself in the shoes of those who were making the decisions, their conduct is easily explainable. Those who weren't alive then can only imagine what it's like to be in an all-out war with a pair of superpowers, with thousands of soldiers dying every month and with whole cities of our allies being flattened.