I think that A LOT of people had a hand in the assassination. A lot of people had motives. I think Oswald was a patsy for the gov't. Jackie was po ed' over JFK's infidelities (hence Marilyn's death), the Cubans (namely Castro) over the Bay of Pigs and the Cuban Missile Crisis. The Russians over the Cuban Missile Crisis. The Mob (namely the Chicago Mob), Sam Giancana had his issues with the Kennedy's as a whole. The CIA.... I'm sure there were more, but I'm stuck.