Blah blah blah. I could name any number of real life events. I used that because it is a well known part of the cultural canon. Your argument is the reason why lawyer jokes are a thing.
You showed me it made you sympathetic. Other people might just be different, especially those with more at risk.
The punk scene in the US was played out before you were in diapers. I've had any number of death threats for protecting the constitutional rights of people as, if not more, detestable then these nazis. In fact, I've defended nazis against hate crime allegations. In actual court. In real life, not on some silly message board.
I'd do it again. There is no real distinction between a society that abandons the rights of the accused in criminal trials and despotism.
You mistake respecting the rule of law with respecting speech. The non-governmental disrupting of nazis is not an issue of civil liberties. It is a moral issue. One can be a ACLU style first amendment absolutist and still believe that private parties that obstruct the speech of nazis are a good thing, and that any illegalities in doing so do not an absolute in judging the morality of a specific act.
If a few broken windows or a punch in the face makes you sympathetic to nazis, you are a bad person who is easily led to evil. Plain and simple.