When they call you a Nazi (unless you are ACTUALLY a Nazi – not likely), you need to consider this: what do you do to Nazis? You kill Nazis. Every video game, movies, books, you name it. If you need a monster to kill, and you want your audience to not think of themselves as mass murderers for wishing them dead, make them Nazis. Nobody feels guilt over killing Nazis.
So when they call you a Nazi, what they are saying is “I wish I could kill you. If somebody does, you deserve it. I won’t feel guilty about it.”
De-humanizing language. It’s where genocide always starts. Food for thought.