I'm sure it does go back much further! I'm not personally very familiar with much of that history though. So I can't speak on it much.
In regards to your thoughts on the "predator idea".. I'm certainly open minded to that, though it seemed like the impression from that book was that it was a foreign being that attached itself to our consciousness sort of like a parasite. In the end, who knows if any of those stories in that book are even true, I tried to trace it down and.. It could just be a work of imagination, or perhaps a bit of both like is often the case. Still an interesting idea though one way or the other! Especially if you consider the "as above so below" concept a lot of people believe in.

I agree in regards to domestication. They even have the same root word and meaning which is essentially I think believed to be something like.. "Of the house" when I thought about the term "domestic terrorist" in that light, it almost sounds like a farm animal trying to rebel from the farm. Or just about in any context it sounds weird to me now, lol.. I don't wanna be domesticated, I don't think most people do, but I think many if not most humans have been domesticated and they don't even realize it.. Perhaps we can help try to reverse that to some extent and help rewild people and free them more in time. :)
And yeah.. It's really sad what humans and especially certain groups of secretive humans have done for so long.. I'd like to think the tides are finally turning, though.. I wouldn't be surprised if they've already planned like 20 steps ahead. Oh well.. I guess it is what it is and.. All we can do is our best!