[richardtavor]

LBJ could have directed the CIA to do it, off the record, of course. So both suppositions could be true.

[Forward the Light Brigade]

Looks like a cabal killed him before he could damage the power structure. LBJ is possible, he was not a good guy. But, he was too smart to leave behind any clews pointing to him.

[ladyjane]

LBJ could have directed the CIA to do it, off the record, of course.

Nobody picked up the phone and told the CIA to do it. It is obvious who had the most to win or lose.

Many people 'died' one way or another after the shooting. A 'lone shooter' would have no way to orchestrate that, especially a dead lone shooter. Who does that leave?

[TBP]

Then they hire Oswald as a patsy.