Soviet (right) and Nazi officers celebrating the joint invasion of Poland as their countries both embarked on a genocide of the Polish people, Brest, modern-day Belarus, 1939
But do yourself a favor and read up on the Polish Resistance. Those were some seriously metal sons of bitches.
And for those of you who don't like reading history: Imagine watching 50-100 of your friends getting summarily executed every day, and it doesn't make you afraid to stop killing Nazis. It makes you even more emboldened, and that's exactly what you do. You exist to make them afraid to walk the streets.
I wish our schools did a better job teaching about resistance movements. Here in the US most people don't know about the Battle of Blair Mountain, for example, even though it was the largest armed resistance action here since the US Civil War.
But if you know what the BoBM is, you know why it isn't taught, for the same reason churches don't teach what the Bible says about usury.