I don't use the word Nazi outside issues where it's directly relevant or when I think it's appropriate indirectly (Nazis and Hitler do prove the danger of hate speech). I don't recall ever doing so, but I may have. I hate the way the term is casually thrown around in casual conversation and I loathe the way it's misused in political issues.

However, I'd never tell anyone who I knew was Jewish or Roma not to say it (and would apologize if they told me they were). Others who were targeted like LGTB people... Like what nextian said. It feels different. I'm a LGBT person, but I don't feel targeted by this language as a bisexual person.

Also, while I know it's probably impossible to create a perfectly safe space for people, I really try and make it so that it is.