Two renowned anthropologists have spent the past five years documenting the lives of migrants in one specific place. Didier Fassin and Anne-Claire Defossez chose to assist aid workers at a reception centre in the French Alpine town of Briançon, close to the Italian border. They looked at how the migrants were living, what support they received, as well as how they were treated by police. The pair were even arrested while carrying out their research, simply for helping the migrants. They spoke to FRANCE 24's Gavin Lee in Perspective.