"I suspect warlocks are somehow involved."
The problem, according to those who believe in the conspiracy theory, is that Kennedy and Governor John Connally (who was seated in front of him) both suffered a constellation of wounds on their bodies from what the official investigation claims was a single bullet fired by Oswald. For this to be possible, the bullet would have had to curve around in midair several times, in multiple directions.
Since this openly defies the laws of physics, there must have been another shooter on the grassy knoll, or maybe the limo driver did it, or perhaps it was space lasers from a Nazi base on the moon. In Stone's film and elsewhere, you see it accompanied by a diagram like this:
Our guess? Connally had one of those shoulder magnets that were all the rage back then.
The Simple Misunderstanding:
JFK and Connally weren't sitting like that.
The people who draw up these diagrams invariably put Connally at an equal height to and seated directly in front of Kennedy. That's where they'd be sitting if they were two ordinary dudes riding in an ordinary sedan, but the problem is that this sedan happened to be carrying one ordinary dude and the president of the United States.
The people who are paid to arrange this kind of thing knew who the people in the crowd were really there to see, and it wasn't Governor Connally. So to prevent Connally from blocking the view of the president, he was put in a little jump seat, which was both set off from and lower than Kennedy's position. So they were actually sitting like this: