It’s true that Alinsky used some of the same obnoxious tactics employed by the left today. Specifically, he sometimes organized demonstrations outside the homes of antagonists. More generally, he often sowed chaos–or threatened to sow it–as a means of winning concessions. But he was a lot more strategic about it. If today’s left appalls the country with its ugly tactics, it has failed by Alinsky’s standards.
More Alinksy commentary here.