If you're interested in the topic at hand, you should just watch it and judge yourself because the reviews have gone very biased by people that didn't even watch it and just hate (or love) the creator. I liked it, it was well written, narrated, and directed and it was about a topic that interests me.

Blistering performances.

The film never slows down or bores, plunging from one harrowing sequence to the next.

The film may be flawed, but its message is not.