This is my humile opinion on this topic, feel free to express yours in the comments, but avoid fighting each other, alr?
Also, tell me if you'd like more speech like videos, or you want me to stick to the tecnical ones

OMG terminal tricks did ...

Short film made by the US Army just after the Second World War, warning about the tactics that Nazis use to gain power by dividing minorities from each other and telling blatant lies.

This video has subtitles in English, you can see them by clicking the CC button.

More info (by the way the Wikipedia page has the wrong year, this film is from 1947):
https://en.wikipedia.org/wiki/Don't_Be_a_Sucker

A video created by the government in the WW2 era warning people of the evils of nazism

Don't Be a Sucker! is a short educational film produced by the U.S. War Department in 1943 and re-released in 1947. The film depicts the rise of Nazism in Germany and warns Americans against repeating the mistakes of intolerance made in Nazi Germa...

Don't Be a Sucker is an anti-fascist propaganda film produced by the United States Army Signal Corps. It follows a Freemason, Mike, who buys into the prejudiced beliefs of a demagogic street speaker until the speaker denounces Masons. A European r...