Nonsense.
The so-called Art Show was in a stationary location. You could choose to attend or not. A provocative march through a town could not be avoided by the townsfolk, except to flee inside and close their windows and draw their drapes and blinds and curtains and not look outside and to plug their ears. Big difference.
The so-called Art Show was a passive cartoon-drawing contest. You could choose to attend or not. The provocative march in question was explicitly and loudly proclaiming the so-called despicable nature of a religion and its adherents and bemoaning the fact that more did not die in a multi-year genocidal event against them. Big difference.
Guy, keep pretending your racism isn't as bad as the Nazi's racism.
It doesn't fly. This was meant to provoke as much as the Nazis marching through Skokie was meant to provoke.