Saul Alinsky's tactics are being used by conservative protesters now, the NY Times cackles. See these excerpts.
While Alinsky was very much a man of the left, he hated bureaucracy. Perhaps that, and not leftist politics, is the soul of the man. That, at any rate, is my recollection of him, from a talk he gave when I was an undergraduate. He even poked me in the chest to emphasize his point about a question I asked about Madison and factions. "Yeah, that's what I'm getting at"--countervailing power.