I think it was the Italian mafia that organized it and carried it out with the approval and protection from the CIA or something bigger.
Fidel and his guys knew about it beforehand too.
The shots? Of the ones that hit targets the first was from behind and through the neck/upper chest area.
The 2nd about 3 seconds later from behind through the head and then into Gov Connoly's chest.
The 3rd which happened within a second after the 2nd went through the front of the head.
At least 3 shots from 3 different weapons, yet the GOV has the balls to say it was Oswald alone.
All is there on film, best footage i could find:
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