Discours engagé de Barack Obama samedi à Selma
President Barack Obama speaks near the Edmund Pettus Bridge, Saturday, March 7, 2015, in Selma, Ala. This weekend marks the 50th anniversary of “Bloody Sunday,’ a civil rights march in which protestors were beaten, trampled and tear-gassed by police at the Edmund Pettus Bridge, in Selma. (AP Photo/Bill Frakes)