Oswald killed JFK but I very much doubt that we know the whole story.
I’m an agnostic on who did the assassination and why.
But there is no doubt that the liberals used it after the fact to push their agenda, as Rush says.
(E.g., the front page of the NY Times the day after the assassination had a straight news story accurately describing Oswald, but also an opinion piece by Scotty Reston blaming it on a climate of violence caused by right-wingers. On the front page. On the day after.)