4PM: DOCUMENTARY - The dusky blue waters of Lake Victoria stretch lazily across the Tanzanian plains, but beneath the placid surface, a massacre has taken place. In the 1960s, the Nile perch was experimentally introduced into the lake and has wiped out practically all other life. Disastrous for local communities, the situation is a bonanza for the multinational factories that process and ship tons of perch abroad. Thus does globalization feed its lucrative foreign markets while the locals starve to death. Hubert Sauper’s DARWIN’S NIGHTMARE (2005, 107 min) is an urgent, horrific, yet at times oddly blinkered vision of the crisis of modern Africa – a film of intelligence and great empathy that examines the corrosive effects of imperialism on people often left off the pages of history's textbooks.