:cia: More specifically, a cabal within the agency that included the Dulles brothers and and others. LBJ may or may not have known about the plot before it happened, but I don't think he was the ringleader.
I will say though I refuse to believe LHO as the lone shooter cause he could have shot jfk in the face with a much easier shot, source: me and everyone who I had play jfk reloaded on my computer
Depending on whether time travel is real, I might still have a shot
The JFK assassination was an ARG advertising campaign for Don DeLillo's novel Libra
The :cia: did it, it was supposed to be a false flag attempted assassination to justify going after Cuba again, but they fucked up and lost track of Oswald.
As I always say, the funniest possibility is either the official story where some massive fail guy stumbles through life and is passed around because no one even wants to deal with him until he stumbles into assassinating the president, potentially in the process of failing to assassinate the mayor, and then another huge fail guy decides to assassinate this fail guy for the purpose of "sparing the first lady having to look at and speak to her husbands killer". Either that or the theory where a hung over secret service guy forgets what a safety is for and blows the presidents head off after being startled.
So what if its actually the deep state-mafia-gusano collective behind it all, thats boring as fuck and every story goes like this when it comes to American conspiracies, lets have fun since it literally wont matter either way and we wont find out for sure unless some documents proving it manage to escape the shredder.
Suicide. He ate nineteen packets of Pop Rocks and said fuck it all.