The anarchist code of coduct says:
What is Unacceptable:
Degrading, disrespecting, or insulting another person or group of people, because of their :
[...]
So, being a nazi is a political opinion. Denying the holocaust or thinking it should be done again is a political opinion. Thinking jewish people control the media and trans people aren't real is a political opinion. Am I correct in gathering that it's against the rules to disrespect someone for having these opinions? Is it against the rules to say "nazis suck"? Because I don't like that.
A very great number of the reported "deaths due to communism" are Nazi soldiers who were killed in battle by the allies. Go communism!