Actually, Manson probably wasn't a programmed killer. After all, Charlie didn't personally kill any of the known victims of the Family.
Peter Levenda explored fascinating details of Manson's roots in Sinister Forces, and there are several homicides which were likely committed by Manson's Family, and perhaps Manson himself, for which noone has been convicted. But none of that necessarily makes Charlie himself a programmed killer.
I do think he was subjected to programming though.
My working hypothesis is that Manson's fractured psyche - used, abused, unloved & repeatedly traumatized from birth - perfectly fit the profile required by the MK-ULTRA* spooks roaming prisons, reform schools & orphanages for experimental subjects. And that Manson's psyche was then experimented on: either by the spooks themselves, or their proxies (cult & religious groups etc).
My working hypothesis is that Manson proved a fascinating and resilient subject, who over time either learned, or was taught, how to use techniques of control and/or programming over others. Manson went from mind controlled guinea pig, to mind controlling guinea pig.
He became a controlled controller.
Intriguingly, at key times in his preaching career, Jim Jones (of Jonestown fame) disappears and there is evidence that he actually spent the time in a neuropsychiatric hospital in Hawaii. It's quite possible that "charismatic leader" Jim Jones' programming was being reinforced and fine-tuned.
I am certain that at some stage in history - probably starting in the early 60s - a giant, anarchic, reckless experiment was undertaken, and MK-ULTRA "research" was let out into the community at large. MK-ULTRA moved from experiments in prisons, orphanages & in black wings of hospital, and on foreign PoWs, military personnel and within certain military families, to cults & religious groups. Charismatic leaders were created and funded - eg Jim Jones. Faux revolutionary groups were constructed - eg the Symbionese Liberation Army.
Jim Jones was a controlled controller - a perfect subject of Death Squad leader Dan Mitrione.
Donald DeFreeze was a controlled controller - the creation of Colston Westbrook and the Phoenix Program. DeFreeze learnt his lessons so well that he was able to "break" Patty Hearst in textbook fashion, splitting her personality into functioning multiples.
Or so MK-ULTRA Godfather, Dr Louis Jolyon West, effectively testified in court. And Jolly should know...
I contend Charles Manson was another controlled controller - his custom brand of "acid" coming directly from MK-ULTRA labs, his nonsensical Helter Skelter vision birthed from one of L Ron Hubbard's discarded rants & his own prison experiences, and his knowledge of how to control others both a direct consequence of his own fractured psyche and endless honing by the black doctors.
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*I'm using MK-ULTRA as an umbrella term for all the covert mind control programmes - be they CIA, Naval Intelligence, Military Intelligence, deep black offspring of Paperclip etc. And ones we can only have nightmares about...