One of the more credible explanations for Charles Manson is his mind control programming as part of the CIA's/Network's MK ULTRA program. There are still unanswered questions like Who was his handler, How was he triggered (by telephone?) and What methodology was used (Trauma Based Mind Control/Harmonics/Drugs?).
The synchronicity pointing to this mind control link, lies with Roman Polanski, Sharon Tate and Rosemary's Baby and will be elaborated later.