I'm looking for documentaries that go into depth about the practices/methods/treatments that mental asylums used to do to "fix" people. I don't mind if it's very visual - if anything, that's better. Also, they need to be available on Netflix, or even YouTube (actual documentaries, not a short clip, however).

I could lie and say it's something for school, but in actual fact, I love dark stuff, and I'm curious about the past of mental asylums and what used to go on in them. It's a pure learning experience.

Thanks for helping c: