@jwcph Because they don't think they have anything to gain by supporting the 3rd Reich. It is after all, finished.
But a lot of people, both historically and today, see upside in fascism and believe they will not be the targets of that regime. The answer to why they didn't care enough to vote when nothing was in it for them is the same answer as why vast portions of our society don't care about colonial massacres, or police violence against people who don't look like them. "Not me."