Christopher M. comments:
And then, you know, there's all the crazy shit that everyone acknowledges actually did happen. My favorite one is Project MKULTRA. If it weren't actually documented, and someone told me that they believed the CIA was conducting mind-control experiments on entirely innocent, unwitting American citizens using LSD, radiation, magic mushrooms, and electroshock therapy...that would have been classic "conspiracy theory" territory. But, well, they did.
I didn't know much about MK-Ultra, but...whoa.