Wrong. Here's his exact quote: '"Look at the way I’ve been treated lately, especially by the media. No politician in history — and I say this with great surety — has been treated worse or more unfairly.'" He said "especially," but not "exclusively." That means he is talking about more than media treatment. In any case it's foolish to compare your treatment to every politician "in history"; a foolishly exaggerated claim.

I'm not familiar w/all the JFK assassination theories out there, but I don't doubt someone does accuse the media.