Because someone is on the ball, Turner Classic is playing (among other WWII films) The Great Dictator today.
If you haven't seen it, please do. It was produced by Charlie Chaplin in the late 1930s, when it became clear that the war was going to happen, and came out in 1940 after it had started. Essentially, Chaplin realized that his famous mustache was about to be usurped forever by a fascist, and that fascist was going to kill a lot more people in the future than he had already.
It's a parody, made before the worst horrors of the Nazi regime were known to the general public, so there is discomfort here (if you've seen Disney's Der Fuhrer's Face, you'll get the idea), but the movie ends with Chaplin essentially saying "fuck it, no one else seems to be speaking out about this and I'm going to use my platform to do that."
For context, this character is a Jew who has been mistaken for the dictator (for obvious mustache-related reasons), and has been sent onstage at a rally to give a speech. Instead of trying to impersonate Hitler, he says what he really thinks. And keep in mind, Chaplin was coming out of semi-retirement for this. It was the first time most people had ever heard him speak, and this is what he said:
