The Congolese province of Katanga is a major supplier of the world’s gold, copper, and uranium, but precious little of the profit trickles down to the ordinary folk who live and work there, and multinational competition has intensified lately with the arrival of Indian and Chinese interests. Directed by Thierry Michel, this Belgian documentary provides an engrossing take on neocolonial economics and some of angriest muckraking to hit the screen since Darwin’s Nightmare (2004), the drama heightened by larger-than-life personalities on every side of the complex political equation. In French with subtitles. 120 min.