Mighta been Goodfellas. I think I have heard Henry Hill talk on the Stern show about .22s and ice picks being his favorites. Ice pick being from behind in a car, thrust up into base of the skull and wiggle it around.

On topic: I can't find a link, but I have read where the kooks figure JFK and Reagan shootings were both coups orchestrated by moneyed Texicans. Hinckley being the mental son of a large GHWB donor was the throw away Manchurian Candidate, as some claimed Sirhan was. If given the choice, I think I'd rather be a Manchurian Candidate than a straight patsy, like Oswald or the guy that was jailed for killing Vicki Morgan. One of the few things they don't blame on the Jews.