To be clear, I don't condone rioting by anyone. 

National Socialism gave the world Auschwitz, Dachau, 45,400 Canadian died to rid the world of the scourge of National Socialism.  This is not a philosophy or political movement that deserves or merits any space in our society.  It wasn't necessary to exempt it in the past because it was so self evidently insane and wrong to our forebearers, but as the memory of WWII fades from living memory, we must consider taking other measures in law to prevent the spread of this evil.