It's damn scary and disturbing. I remember watching a documentary on Jonestown as a kid and being uncomfortable for weeks. It stayed on my mind, and to hear those kids crying from pain as their parents forced cyanide down their throats -- some willingly, others at gun point -- is incomprehensibly disturbing. Cults are genuinely terrifying. You make a group of people believe something strongly -- regardless of how illogical -- and they'll literally follow you into the depths of hell. Often, those who take most advantage of this defect in human nature are those who shouldn't be given a platform at all. A guy like Jim Jones should have had a bullet put through his head long before he set foot in a pulpit, but true evil is fairly adept at deception.
What made Jones even more sinsiter is that the piece of shyt explicitly sought to exploit disenfranchised blacks, preying upon the elderly in particular. He adorned his manaical and sinister drivel up in the sheets of civil rights and religion. Blacks often turned to spirituality to cope with their daily struggles of being considered second class citizens. He had an easy two-for-one. Reading about his background prior to Jonestown, he was clearly a mad man. The entire ordeal was pure insanity.