Lots of excellent points @angstman.
The pedant in me makes me say the working classes also fought against Mosley - Cable Street being the most famous examples.
Mosley and his cronies were from the upper classes, the Mitfords (not all), some Royalty, and others among the upper classes were all fans of Hitler.
I find some of the parallels with Weimar very disturbing, the media projecting myths as reality, the use of democracy to oppress minorities, populism and the belief that feelings matter more than logic. It is a source of concern and distress to me.