wacth the movie "JFK" they raise some interesting points, but dont come to a real conclusion. Lee Harvey Oswald defiently didnt do it tho if you watch the video, it makes no sense and would have been virtually impossible.

Basically the movie has theories that the mafia, cubans, and cia were involved... did you know that that day there was less security by the cia than usual, they were told to stand down... watch the movie its very interesting.