No matter how many shooters the conspiracy theorists can claim, one of them was a Communist named Lee Harvey Oswald.
Exactly.
I believe the question about the number of shooters is a diversion.
I believe that this CIA/FBI/LBJ did it thing is a diversion.
We know that there was at least one shooter, Oswald. We know that Oswald was a communist who spent almost three years in Russia and was pro Russian. We know that Oswald was a pro Castro activist. We know that Kennedy gave approval for the Bay of Pigs operation to overthrow Castro. And we also know that a likely hired thug killed Oswald.
How directly involved Castro and the KGB were with Oswald's activities and who paid Ruby to silence Oswald we'll probably never know .