Why would his head move the wrong way when he was supposedly shot from behind? It looks like he was shot from the front, viewing the Zapruder film.
I believe neither the Oswald acted alone or the Cospiracy people. That is until someone invents a “time-viewer” and we can actually view what happened from multiple angles and locations and record it to high def or better video and high speed video and audio and backtrack everyone in daly plaza that day.