That's usually the response I get from people when I point this out. It really is a fantastic documentary as far as production and storytelling goes. I felt the same when I watched it.

And then everything crashed when I looked up the details. It went from "awesome" to "Man, how evil were those filmmakers?"

My apologies.

I wouldn't be surprised if most documentaries are similarly inaccurate. The filmmakers want to tell a story, and good stories are never completely neutral retellings.