Kind of amusing.
I never thought I would say this but the Nazis are jerks but the real thugs are the gangs.
Maybe they ought to reschedule the protest in a place where the homeowners and barowners are more "prepared".
Even further...the Nazi's have expertly "used" these gangs as tools to support their propaganda. The gangs have expressed their ultimate intellect as supreme "tools" of the National Socialists, who have not only proven their point beyond a doubt (black violence), but manipulated these folks to further soil their own home.
Nazis 1. Gangs 0.