It'd be easy to imagine, if we picture the world as it was when moving pictures were invented, that some forward thinking people would see the potential and opportunity to use this new medium to tell stories that shape perceptions. As to evil and child sacrifice...tougher sell.. but, science revealing that stem cells from young people could help alleviate signs of aging in older people is interesting...

Probably not just hollywood but a lot of the people in power. If you'd do anything to be at the top, it's not hard to compromise you. They go on retreats and do all kinds of weird stuff to each others, and others.