Great post Steve and spot on.
All of this mythology about the shot Oswald made from that position being beyond his ability is hogwash. The same shot has been replicated many times by other shooters using the same type of rifle; even the same ammo from the same batch of ammo stock.
Then there is the "magic pristine bullet" which wasn't so pristine, it was in fact disfigured.
Even the misconceptions about the direction JFK's head moved after being hit in the scull by people with no concept about how ballistic and anatomy would make the jet effect from brain matter flying forward throw a human head backward. Most people make assumptions on what they see in movies, not any science.
Oswald was the one, and the CIA and FBI were very embarrassed by that. They knew Oswald was a kook and they let him in the hen house.