Amen, Steve. I would also throw in contempt for Lee Harvey Oswald. I was just a child, and when Ruby shot him I came running out of my granddad's den yelling, "Alright! They shot the sonofabitch that shot the President!" I was told that if I used that word about anyone else, I would be in for a mouth washing. But in this one case, my grandmother made an exception.
I do think that the big fault line is between the TV watchers and the readers. People who live their lives in front of a tube seem to need to have all the loose ends neatly tied up in time for station identification. Conspiracies will always be popular in the imagination, and were long before TV, because they take the randomness out of life and apply a structure to it, albeit an evil one. Lost your job? Depending on time and who's selling you the conspiracy, the Jews did it, or the banks, or the big corporations. Someone in your family died of an awful disease? Naw, they were killed by environmental despoilers. Can a pilot screw up and crash a plane? No, it was brought down by terrorists (or by rogues in the US military, depending on the prejudices of the conspiratroid in question).
You see all this in the merchants of Kennedy conspiracy theory (starting with RFK, and continuing through Stone to the present day). Their perpetrators are all over the place: the Mafia, the CIA, LBJ (really...), the generals, basically whoever's the particular conspiracy buff's personal bogeyman. People don't want to admit it was just a scrawny little nebbish who failed at everything else he ever tried in his short, miserable, attention-seeking life.
If someone had killed the nut job that whacked John Lennon, no doubt Stone would do a movie that said that the other ex-Beatles did it, and then Paul and Ringo had George hit to cover up the misdeed. I mean, you don't really think lifelong smokers die of cancer, do you?
d.o.l.
Criminal Number 18F