Yeah, if you think the US is going to go fascist you're living in a fantasy land. You wouldn't just need a depression, you would need the whole fabric of society to unravel and become as poor as pre WW2 Germany.
No country with a high GDP has turned authoritarian. Authoritarianism doesn't work in wealthy countries.
Japanese internment camps were not a fantasy land. The US exhibits fascist qualities all the time. We don't usually call it that but there are certainly examples which could be considered that way.
You mean back when people thought blacks were less human than white and women didn't have the right to vote? Back when a depression meant people starving to death?
We're not the same society we were back in the 1940s.
No country with a high GDP has turned authoritarian. Authoritarianism doesn't work in wealthy countries.