Before you think this is a slide consider:
Tavistok controlled.
Possibly most influential group (to teens/pop culture) on Earth at that time.
Suspicious murders/suicides constantly surrounding them/their inner circle.
Endorsed drugs, eastern religion, counterculture.
Laurel Canyon connections.
Many more but you get the point.
I've always thought the 11/22/63 was a marker of some sort. The beginning of an operation. Planned in advance.