Posner’s book started the change.
Bugliosi’s book closed the circle.
It was Oswald.
Those who think otherwise simply haven’t read those two books. Or are incapable of using common sense.
Like I said most conspiracy theorists are leftists who don’t want to admit that a commie did it.
I could make a much stronger case that the KGB was behind the attempted Reagan Assassination, but they don’t seem to want to spend any time on pursuing that.