A single documentary makes many hundreds of claims.
(At least, they should, but we sometimes see links to rambling YouTube videos sometimes where the producers carefully skirt around making a testable claims, and you need to watch for 5-10 minutes to find one.)
Given that, it is unreasonable to ask that someone prepare an answer that addresses the research behind all the claims. It could go for dozens of pages.
(If you have a good answer for one claim and not another, it is also problematic.)
Therefore, we suggest posting each claim as a separate question.
As you are a new user, I would recommend posting one first to see how people react, and to get the hang of it, before posting more.