I know I'm a bit late on this reply, but I don't find DiLorenzo's moral equivalency the least bit surprising.  The German and Austrian bishops made very similar comments about the Nazi Brown Shirts and their mostly one sided brawls with socialists and communists.  I say one sided because law enforcement supported the armed Brown Shirts. And the fact is in Germany their was no real opposition to the Nazi's from 'good Catholics and Lutherans'.  It was the true leftists that stood up in the streets against Nazi racism.  At least the US seems to have learned enough from Germany that the resistance is cross cultural and massive if Boston is any indication of the future.  Antifa is a drop in the bucket.