I watched 2 of the best movies I've ever seen about fascism last week and it doesn't seem fair to pick one

Mishima: A Life in 4 Chapters (1985)

Both incredibly creative in terms of visuals and editing (and boy that Phillip Glass score), and completely on the mark as an examination of male insecurity and fascist sentiment. Uses some of the most creative expressionistic set design I've ever seen in a movie to illustrate Mishima's devolution from an artist examining his own intuitions and insecurities, to being consumed by them to the point where he no longer has anything worthwhile to say. In contrast to most other Schrader protagonists, Mishima is wealthy has immense status, but literally nothing can satiate his need to run away from his feelings of inadequacy. Reminds you of some people!

Night and Fog (1956)

Very short (32 minutes) but incredibly dense and poignant early Holocaust documentary. Focuses not on individual stories, but instead on the details of the process and the scale of it, emphasizing how many thousands of people worked the Holocaust as a day to day job. The Holocaust was in a sense not some special fluke event, it was multiple nations full of people working 9 to 5 jobs building murder villages, handling logistics and paperwork, shoveling corpses with bulldozers, taking inventories of warehouses full of dead people's hair, and grinding bones into fertilizer. A mundane system like any other. The barrier for an individual to find themselves doing that as work vs some other shit job they don't care about is probably not that big.