Also, to talk about how it’s hopeless to have a gun versus a drone — there aren’t enough drones, and Vietnam is a great counter-example for “tech always wins.”
Maybe, maybe not. The Nazis weren't just "bad guys backed by the government who were armed," they were a political party, which included much of the German populace, who supported its anti-Semitic ideals. It's possible more guns would have ended the Holocaust sooner, but it's also possible they would have just made it more efficient.
Citizens being armed would both change the calculus of a genocide, making it harder to execute and possibly preventing it.
If attempted anyway, it would be much messier for the Nazis.