This comes from today's BBC Online @
BBC News - JFK anniversary: The myth and reality
The assassination of John F Kennedy means that we all get to decide how his story should have ended, and thus plot an alternative trajectory for the country he so fleetingly led. The events in Dallas exactly 50 years ago made JFK as much a myth as a man, one of history's most endlessly malleable figures.
A very interesting and thought-provoking piece