I'd seen this documentary in a cinema, so one question I had was whether it would be so colossally effective on a smaller screen. Answer is that it loses something, but only a little. Still an astonishingly constructed movie, seeming to evoke a place, people, life and the issues that face them. I recommend it to people.
An amazing documentary and a riveting watch. We bought it as part of our Christmas viewing package and everything stopped while it was running. If you want something completely out of the ordinary, this is a must.