There were FAR too many coincidences in the JFK assassination and the ensuing murder of Lee Harvey Oswald to turn a blind eye to the possibility of a conspiracy.
http://www.jfk-assassination.de/articles/deaths.php
It all started somehow with Marilyn Monroe death in 1962, or the Cuba revolution 1961, when our special forces guys and others fighting for freedom were abandoned in Cuba and had to find their own way out.....it’s all tied together, and Jack Ruby had something to do with Cuba, as well as Ozwald??
Jimmy Hoffa said it was a conspiracy, and he disappeared by 1975, those 13-14 years saw a lot of people murdered or ???
There are more questions than answers, and that usually means a cover-up.