Like I said, there are lots of good ways... I thoroughly enjoyed this.
https://www.theguardian.com/world/20...00-for-charity
I am somewhat skeptical about the real impact of things like counter-protests, because other than bringing people together, they don't really have any practical goal. So I'd be more on the side of picking a legislative goal that would be bad for facists, like laws against open carry of long guns or background checks for gun purchases that flag affiliations with extremist groups, and setting about putting pressure on elected officials to implement those. But if you like, just counter-protest
without bringing weapons. That's not that hard, is it?