I got into studying some of this stuff back in 2010...it's been a minute but I remember that being a difficult time because a lot of what I was reading was absolutely sickening. It was stuff so disgusting, my mind wanted to believe it was likely all fiction...but the longer I live and the more I see, I see truth is stranger than fiction and a lot of it may have been truth.
There was a book I got ahold of - Thanks for the Memories, I think it was called. It was by a lady who chronicled her experiences since childhood in being groomed to be a sex slave for US presidents, a human computer for Henry Kissinger and some kind of slave for Hollywood celebrities. She wrote how she personally witnessed the members of the Jackson 5 each get raped prior to going out to perform on one of those shows which used to go on back in the day (i.e. like Bob Hope or Johnny Carson).
I think there was another lady named Cathy O'Brien who was used similarly...said the first memory she ever had was of her own father replacing her bottle with his...well, you know. Her parents sold her into this network. Ritualistic sexual abuse is apparently a big part of this network because, for the purposes she was used for, this sort of abuse helps to "shatter" the brain and make the "pieces" available for reprogramming; there is apparently some connection also between anal rape and awakening certain occult forces within the body, and this is why this act was a standard in their programming as well. Essentially, she was walking around with different personalities that could be called forth for different purposes by her handler (think the movie The Manchurian Candidate).
She and others talked about the pedophilia and abuse amongst Washington politicians, and she named names including RFK, Ford, both Bushes, Cheney and both Clintons. She, or maybe it was the first lady I mentioned, explained how Disneyworld in Florida is a totally different beast after hours, used as a site where much of this child abuse and programming takes place. She said some of the training took place in broad daylight in the mist of visitors, describing how they used some of the rides to trigger certain states of mind and program the kids.
All this shyt was 100% sick and I ultimately stopped reading it because, besides being aware, there is nothing it adds to your mental health. I know you asked about Hollywood, but I included this because what the books suggested is there is a connection between Hollywood, the government and, in cases, the church.