Saw it today. It's a powerful film, also incredibly hard to watch at times, which it should be! It's a fitting testament to Nelson Mandela, but also a film that wasn't afraid to sure that in his younger days, he did choose to do some incredibly violent acts. But again, parts of it were very difficult to watch, especially the violence of the mid-80s.
The film starts a short time before Mandela's first marriage in Johannesburg in the early 1940s and covers the main events of his life up until the 94 election.
It's a hard hitting film, but of course, it has to be, Mandela's life was a struggle. The only gripe I had with the film was that the crew didn't quite seem to know when to end the film as within the last 15 minutes or so where there were a number of fitting points, but it just kind of lumbered on and almost felt as though it was about to run out of steam. But other than that, it was a film I'd suggest people go see, especially for Idris Elba's performance, for very much capturing the complexity of Nelson Mandela.