My thread on /sci/ expired and I'm not going to repost all of it, this screenshot should suffice. See these two threads if interested.
https://boards.4chan.org/x/thread/37419700
https://boards.4chan.org/sci/thread/16083329
There are two primary possibilities and one distant secondary "cluster". Not mutually exclusive.
1) Most of this stuff is scripted, ie a psyop. Order of the Eastern Star, Freemasonry, etc.
2) "Something" exists, or is made in sucha way, that human behavior can be scripted and contrived, not unlike a puppet show, by unseen and nonlocal means. This could be EMR entrainment, ELF, ELF infrasound, subliminals and something like psychic during sleep (which scripts a person's day in the "astral"), and so on.
And the distant third would be something more organic, we could call it emergence within complex systems vs contrivance on the human layer. Apophenia, pareidolia, frequency bias, pidgeonhole principle, etc, will not be entertained (at least by me) ITT. This isn't a limited sample of these videos, it's basically a good 60+% of them, and all of the prior serial killers as well. And it also requires a person finding it in their own life to get passed the "if" stage.