Hypothetical question

[John Corbett]

The initial movement of JFK's head, as a result of the headshot, is forward and down (as seen in the slowed-down GIF below). The illusion is that this movement is so quick it can't be detected by the human eye and we are left with the so-called "back and to the left" movement (which is simply JFK's head rebounding off his chest as a result of the explosive force of the headshot):



As for the topic of this thread, I believe interest in this case would have fizzled out in the '70's if it wasn't for the Z-film being shown on Geraldo. The Z-film reignited interest in this case and has been the driving force of this interest for so many decades.

I think there would be less interest in the assassination without the Z-film and probably no HSCA. But the WC skeptics were out in force before the Z-film was made public so I'm not sure WC skepticism would have died out completely. CT bibles Six Seconds in Dallas had already been published and Ruby's killing of Oswald fueled much of the early belief in a conspiracy. Would  the skepticsim have continued into the 1980s and beyond. Probably but not on the scale it did. I don't think Oliver Stone would have bothered making a movie about the JFKA.