Around the world the election of Barak Obama to the White House was seen as a watershed moment for race relations in America. The first black man to be president was taken as the symbol of a new post-racial era; but six years on, with tensions between black communities and the police running sky high is anyone still talking about a post racial America? HARDtalk speaks to Cornel West, writer, academic and fierce critic of president Obama and asks why the race debate turned sour.