By laeffe (the new channel of Feltrinelli) and LA7, four documentaries filmed by Michael Mann, the director of Collateral and Public Enemies - Witness: Juarez, Witness: Libya, Witness: Rio, Witness: Sudan

Drugs, poverty, violence, corruption, arms trafficking and ethnic war have created some of the most dangerous hot spots on the planet. Witness follows the new generation of photojournalists in conflict areas in Mexico, Libya, Brazil, Sudan. What makes a journalist go closer to the action when everyone else is looking for shelter?

Witness: Sudan

French photojournalist Veronique de Viguerie, who was pregnant at the time, spent time with the Arrow Boys, an improvised and courageous group of farmers who organised themselves to protect their families and fight against Joseph Kony's Lord's Resistance Army (LRA), which has killed thousands of people in Sudan.