'70s Week: Ousmane Sembène’s "Xala" and Souleymane Cissé’s "Baara" revel in caustic humor and the comeuppance of corrupt leaders to explore the class struggles of post-independent African nations.

Presley Chweneyagae, the South African actor who earned international acclaim for his role in the Oscar-winning film Tsotsi, the first South African movie to win an Oscar, has died. He was 40.