It's like it's a piece of the Ultimate Vindication Of Racist Hate. I submit vigorously that we have a spiritual problem here. Classic Christian teaching outlines it as being idol worship, of taking a thing that should be taken as reflecting God's glory as reflecting the glory of humans instead.
It would rightly be God's glory that mere suspicion doesn't set off an irreversible action, but that conscientious investigation is first required. The FDR administration showed two sides here. It hopped vigorously on the Depression, but also hopped vigorously on popular fears.
Anyhow, considering what people of Japan raised in Japan, to witness a hair of that dog in the USA transposed into a caucasian key isn't super surprising to me even though it is super saddening. Dampening down the evil requires a spiritual focus. So far the effort has been feeble.