JFK was assassinated by Israel because he opposed a nuclear Israel. By that time, the CIA had been coopted by Jews. They even had their fellow Jew, Abraham Zapruder, there to document (video record)the assassination. That's the well-known "Zapruder film".
What is the probability that a Jew would be in Dallas right in front of the president with a top-of-the-line camera recording JFK being shot, and the probability of another Jew, Jack "Ruby" Rubenstein, inserting himself into a police station while Oswald is being transported and subsequently fatally shooting him point blank? With a dead Oswald, the narrative is sealed and fed to the public.