Just a quick thought: Calling people Nazis does not make them want to stop acting like Nazis. You know who else was called "Nazi" and yet kept acting like Nazis? Actual Nazis.
Calling someone a Nazi-- like calling someone a Libtard, or a Fascist, or any other derogatory name-- identifies that person or group of people as totally encapsulated in a certain negative identity. It no longer treats them as human. It no longer provides any room for them to repent and change. It demeans them and imprisons them in a shameful label, and tells them that "you are just THIS and can never be any other". And most people, when labeled thus, live into the label. At some level, consciously or unconsciously, they say "OK, if you are going to demean me with that label, I will turn it into a badge of honor, and I will be more [insert label] than you can possibly imagine".