A lot of Bill Cooper's conspiracy theory talk & text was filled with subversive half-truth (it isn't all bad, though who
doesn't know about New World Order and the PNAC?) which may have been deemed dangerous by our government. He also is a minor contemporary counter-culture figure and
Behold A Pale Horse is seemingly required reading for townie psuedointellectuals. You can toss Robert Anton Wilson into that heap as well. At least the Church of the SubGenius is a joke, so it's not so ridiculous.
I wouldn't doubt that the CIA and FBI had files on Cooper. It seems they did fuck with him about a lesser crimes like misrepresenting himself on a bank loan application. Moreover, he never paid income taxes. Worst of all, Cooper developed a criminal pattern of acquiring weapons and assualt charges and had involvement with militia groups. Perhaps this (being a straight-up redneck, the schizophrenic label is apt to anyone who reads his work or listens to him speak) led to his
end.
Funny thing about your post too, tesla69, is that I was wondering when some crackpot would get on here and write about aliens building the pyramids. Oh, and thanks for throwing in that laugh riot about why were really in the Iraq war right now...to recover alien artifacts...haha...priceless.