The first way to look at it is through the assumption that there were two shooters, one in the Texas School Book Depository, and a second on the grassy knoll. This fact in itself is a conspiracy theory.
Another theoy I believe this Joseph P. Kennedy was the dad, and he wanted John Kennedy to be elected. So Daddy Kennedy went to Chicago and got a hold of the mafia and asked them for help. What do they say? "What's in it for me?" As a response "If you help John get elected, we'll go lightly on the mafia" the mafia agreed to help. So the election was coming up and the mafia were going to vote, but some people that were dead were already registered for voting, so the mafia got there names some-how and used their name to vote. In Illinois, Mafia boss Sam Giancana arranged for 10,000 votes to be cast for John F. Kennedy "from the graveyard." As a