No...... you're wrong. It was an unknown gentleman taking pictures/movies of the motorcade going by. And again..... it WASN"T Oswald !!! How many times do I have to say it? Ozz was upstairs on the 6th floor KILLING THE PRESIDENT !!! Then he eluded everyone, went back to get his .38, shot Tippit and ended in up in a theatre that almost ended in another murder. I'm glad Ruby shot Oswald. I would have too, if given the chance. I used to doubt this. No more.
Not so fast: Oswald, a patsy and a lousy shot, was given a lousy rifle and told to shoot downrange... but not hit anybody. Meanwhile, there were 42-ish* shooters scattered around the grassy knoll, all of whom made the opposite mistake.
Later @Tippit, Dirty Harvey was only attempting to fire warning shots at the officer, but again: lousy shot/lousy weapon.
At the movies, 'the man of the hour' (well, 45-ish minutes) attempted to surrender his weapon, explaining 'that's it, it's all over now... I can't hit anything with this thing'. [CLICK] 'See what I mean?'
*when adding up those claimed in conspiracy-monger pulp fiction.