I saw on one of the MKUltra videos that all Satanism is imagery and shock value to break down the psyche. Given the indoctrination of kids from a young age into some form of religion will set a "safe space" for them. Then hit them with the satanic imagery and blow their world apart. What kid isn't going to freak out and break down when you turn their world topsy turvy? After that they can be controlled.