It's too bad about JFK.  He seemed like a good guy.  I would be remiss in my duties as weird nerd trivia dredger if I did not link a conspiracy theory or two, but it seems that the bulk of the articles I have found are designed to debunk the conspiracy theory (perhaps the result of a meta-conspiracy???).  HOWEVER, I did find this article that claims the fostering of the JFK conspiracy was actually promoted by the KGB to sow dissent in the US (a conspiracy about a conspiracy?  Brilliant!).  Enjoy!  http://paulmitchinson.com/articles/jfk-conspiracy-a-kgb-hoax