IMO, it's overkill how they try and be as vigilante as you say. Lot's of contextual reasons led to Hitler's rise as the fuhrer and while he maintained his ardent supports the populace as a whole likely started regretting it and he also seized power, really.

They were initially downtrodden, humiliated and stifled by clauses from Treaty Versailles and someone came to them claiming birth right cultural and heritage pride and to be prosperous once again, to be fair it sounded good. I'm not an apologist, well, actually I might be for most of the people, it happens to the best of us and will again too.