I believe Kennedy’s own government did him in. The CIA. If you really think about it; who is really big enough to carry something like this out and get away with it. Kennedy had his problems with the CIA. Of course, there was the Bay of Pigs.
There are interesting aspects to the assassination but this story isn’t that exciting... but as someone mentioned, perhaps that paper bag is still around.
Except for one thing.
Conspiracies of that magnitude ALWAYS have tattlers.
Check out Gerald Posner’s book “Case Closed.” It is pretty convincing in its portrayal of Oswald as a total loser who acted alone.
My speculation is that the Soviets had nothing to do with it. They were freaked out and soiled their britches when the news came out.
If it were a conspiracy (i.e., more than one person involved), then scores maybe hundreds of people would have been involved. Too many, I think, to keep it a secret after all these years.
Occam’s razor says LHO did it alone and Buell is mistaken. He unwittingly transported the murder weapon to the book depository that day.
That seems most likely to me, but who knows?