Coincidences
Let's make a list of all the odd things that have been confirmed:
* Oswald - shot by Ruby November 24 1963
* Warren Reynolds - attacked and then changed statement to blame Oswald 23rd January, 1964
* Betty Mooney MacDonald - gave Reynolds attacker an alibi, suicide
* Gary Underhill - was CIA, claimed he knew, shot in the head 8th May 1964
* Guy Banister - died from blood clot June 6, 1964
* Rose Cheramie - had Ruby foreknowledge, run over by a car September 4, 1965
* Dorothy Kilgallen - died writing a piece with Jack Ruby info November 8, 1965
* Lee Bowers - driven off road by a black car, told EMS he'd been drugged 9th August, 1966
* Jack Ruby - sudden onset of aggressive cancer January 3, 1967
* David Ferrie - died after Garrisons investigation was announced February 22, 1967
* George de Mohrenschildt - committed suicide March 29, 1977
Trying to stick to factually identifiable things here. I've put it into chronological order as well if it helps. What we should do is make a list of other similar events, like Lincoln, and compare the number of oddities.