This is a must-see and one of the best documentaries - and films - of this year.

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

what a terribly boring film. I'm sorry but this is absolutely not deserving of best picture and will be forgotten quickly. Entertaining and engaging cinema? No. Nothing performances with flat faces and mistaking silence for subtlety.

It’s sentimental, ridiculously long and only occasionally funny