Oswald himself told everyone exactly why he was there.
“I’m just the patsy.”
Oswald was a known Castro sympathizer. When he found out the motorcade route would pass right by the Texas School Depository Bldg he put his little murderous plan into action.
He also killed officer JD Tippett that afternoon too. Some ‘patsy’ but a lying, murderous, loser commie bastard that he was.
Well, he was a patsy that brought a military rifle to work with him. Other than that, you’re right.
He also killed Tippet, and would have killed the arresting officer if the officer didn’t jam the gun with the web of his thumb.
Oswald drew on him.
I’m not convinced Oswald acted alone, but I am sure he was committing subsequent acts that made it look like he was a willing killer.
I think he fired from the school book depository, and likely killed Kennedy.