Watch HDToday. A Mauritanian worker, Sidi, works in France. Like most immigrant workers, he is employed to do the most difficult and dangerous jobs. Sidi and his comrades are exploited systematically and permanently, as much by their employers as by their own countrymen who are constantly able to offer false working papers, slums where immigrants buy at high cost their right to sleep. But faced with racism and economic exploitation, immigrant workers communicate, organise...