Just because he felt he was lied to doesnt mean he thinks there was a clandestine conspiracy to kill the President. (and it certainly doesnt mean there was one) That isnt even jumping to conclusions that is leaping tall buildings in a single bound...
dx is right you do sound like the 9/11 truthers. No that doesnt mean you are a truther (which is how you seemed to interpret it) but you are selectively deciding what is considered fact and what is not, which sources are legit and which are not and not even entertaining the possibility that you are missing the forest from the trees.
Look do I think the CIA wanted Kennedy gone...sure. Do I think it is possible they might have put things in motion...I guess. Do I think a group that has a spotty record at assassination anyways (how did Castro die again?) was able to set up a massive coup de tat on an open street in the middle of the day in Dallas, TX in front of hundreds complete with multiple shooters, a ready made patsy, secret service help and even 50 years later no one has leaked anything? Nope! Christ we found out who Deep Throat was, we find out all sorts of things over the years because people talk...yet not one person has ever been identified legitimately (ignore the Warren Report in the years since not one dying declaration, not one family member embarrassed by a secret or finding a diary, not one drunk admitting it in the bar late night) as being part of the conspiracy. Unless this is like a cheesy movie where they killed everyone off who might have known then the chances that are true are ****ed near nil. The CIA has never been that good at keeping secrets...
Kep you bring up Occam's Razor, well take a step back. Which is more likely, that an entire Intelligence Apparatus killed a sitting President in broad day light and framed someone for it without anyone knowing or finding out later OR LHO was a nutjob with a gun and he shot the President and was too stupid not to get caught? Dont use your gut, use your brain.