The above can be true without a conspiracy happening. I.e., the establishment saw JFKs Cuba missile crisis actions in addition to his plan to withdraw from foreign military actions as extreme policy disagreements without having them actually want to rub him out.

So both things can be true. They hated him and did everything in their power to undermine him AND some crazy thought he was such a threat he shot him… without the establishment having been involved in the action in any way.

Of course it’s also possible but less likely the establishment thought he was such a danger they HAD to take him out… but there raises the question, with Trump, whom they hated just as much, did they adjust their MO?