This was an incredibly captivating story and film with cinematography that puts you in the moment and makes your heart race. The film shows multiple perspectives which really helps paint a full picture, and I could not help but side with one of them. I still cannot believe how this was all shot live and over the course of three years.
In terms of getting access to a story like this, I think one really has to live with the people before even finding out about this. Talking to and working with the locals, then eventually you will be connected to a story like this. Trust also has to be built, for them to take you everywhere and for their behavior to remain authentic. Not only that but as you live and interact with people you will find out about stories that you could not if you were on the outside, they are their own cultures and societies and you must be a part to access it (unlike in first world countries where everything is accessible online).
Personally I was most captivated by the mixture of the story with the shots of nature, which fit just so perfectly. As for the Uru-Eu-Wau-Wau people, it was truly inspirational how much they cared and took action. It was their whole lives, and for them their whole world to take care of their culture and their land,