My conspiracy theory?? JOhn F. Kennedy , his brother and Marilyn Monroe were allkilled by the mob. Sam Giancana and his people. Look at it this way Marilyn slept with both Sam and John, she knew too much, so she had to be silenced. Sam was a huge contributing factor and getting Kennedy elected to the presidency by stuffing the East Coast ballots guaranteeing a win in exchange for the promise the mob would not be prosecuted. It all went to hell, because the moment John stepped into power he appointed his brother, Robert as Attorney General. They broke their promise to the mob, they started public interrogations and the rico statute against racketeering, etc. Hence i think Sam Giancana and the mob were the ones responsible for all three.Thanks.