“But while it’s hard to actually imagine any part of the U.S. establishment — even the spooks — executing a President”
No, not hard to imagine at all.
I think the Deep State, Lindon Johnson, the mob (Cuban, New Orleans and Giancana) and others were all involved, I do not think they could have pulled it off without all being involved.
LBJ is particularly easy to imagine as someone willing to do anything to get to the presidency.
I’ve always believed LBJ was involved in some way.
I had military friends who worked in whe White House while he was President. He was truly evil. One of the guys said one of his duties was to escort LBJ’s bimbos through tunnels or something. I don’t know if the tunnels thing is true.