The Unabomber's manifesto was a lengthy rant about the evils of leftism.
"One of the most widespread manifestations of the craziness of our world is leftism."
washingtonpost.com/wp-srv/nationa…
washingtonpost.com/wp-srv/nationa…
I mean, there's an entire section titled THE DANGER OF LEFTISM that insists that the movement Kaczynski was calling for had to be "resolutely anti-leftist."