There are lots of gray areas in life, and lots of complex questions which require nuanced well thought-out answers.
It's often useful to problematise simple statements, to draw out different implications and to shed light on what might be un or under considered aspects.
I don't think your comment does this though. Mussolini was a fascist. Not someone with some fascist sympathies, or someone who someone else accused of being fascistic.
Maybe my response was a bit glib. Violence is certainly not something to be undertaken lightly but I think political violence against fascists is justified, and can be considered self-defence.
And what about the billions of people that sees the US as a fascistic imperialistic hydra? Would it be cool to pick of Obama as well?
What if these guys are falsely accused for being fascists by teenagers who never read a history book in their life.
That being said posts like this doesn't belong on HN and cries for murder most definitely don't. A real shame might as well head over to reddit or 4chan for this parroting of slogans.