Speaking of, if you wanted a primarry source of Nazi antisemetism then watch The Eternal Jew. It is a Nazi propoganda movie that a lot of colleges make students watch as an excersise to show the climate of antisemetism. That one uses the rat insult a lot, and has some really traumatizing photage of a dead guy in a ghetto covered in rats as people walk past him.

Watching that movie was very rough for me but I felt like I left with a better understanding of what living in Nazi Germany was like. I can't imagine living in a world where something so brutal is just playing in movie theaters.