I know this question as been directed at Jewish members and I can understand why you're specifically seeking their views but I also wanted to contribute my own though I'm not Jewish.

I think the term nazi is commonly used in place of fascist. Its as though people treat them as interchangable terms and I don't think most people using "nazi" are actually referring to the political party and their actions, but rather fascism.

Personally, to bandy around the term "nazi" shows a lack of respect for the acts that occured under nazi leadership and a sense of "forgetting"- which I feel is a very dangerous thing to do. We need to remember and look for signs of this ever happening again so we don't let it occur.

And as an aside, I generally find the term nazi, even in the context of fascist to be quite insulting. So if the term was "breastfeeding fascist" for example then that's still a really harsh way to describe a person. I don't know of anyone who would actually be so extreme in their actions regardless of how passionate they were about a cause such as breastfeeding or environmentalism.