I don’t know who killed JFK, but I doubt there are few, if any, that watched everything unfold on television the day it happened, who believe Oswald was in it alone. I remember thinking Oswald’s comment to the media about being a patsy sounded legitimate, but other comments he made brought everything he said into question.
I remember my family discussing Jack Ruby’s shooting of LHO. We believed it was a hit the moment it happened, and had nothing to do with Ruby’s explanation later of why he did it, of course.
So much evidence was destroyed at the time that I doubt we’ll ever know the truth in this life. I remember us saying at the time that had to be deliberate because no one could, or would, be that incompetent in investigating an assassination of a POTUS.