All leftist thought, from the limousine liberalism of a George Clooney to the murderous horrors of Mao, Stalin, and Pol Pot, is of and from Satan. Leftism is a contaminant in the human cognosphere, not a natural component of it.
Satan is smarter than we are, and he never sleeps. Those over whom he has the most influence are like maniacally evil energizer demons.
Every once in a while one of them escapes, like David Horowitz, but who knows how or why?
Very well put.
LLS