Fighting fire with fire usually just burns down the house. Experts on mass movements will tell you that psychologically extreme polar opposites are actually brothers under the skin. Hitler alway saw radical communists as excellent prospects to become Nazis. Both contain a self-loathing destructive streak. The real power for democratic change is peaceful marches like the women’s march.
Tearing the place up so that someone can’t speak like the Berkley fiasco plays right into the hands of the fascists.