An explanation for recent popularity. I was confused out of my mind when the entire country started talking about Saul Alinsky all of a sudden, until I heard that an alcoholic right-wing crackpot was screaming about him while drawing on a blackboard nightly on television.

This happens a lot if you read books that aren't bestsellers. A thing that for decades you couldn't find a person who had heard of it suddenly is in television commercials and image macros because a character mentioned it in a movie, or some twitch streamer decided to rail about it for an hour, and it caught fire.