Fifty years ago this week Martin Luther King declared it was time for America to honour its promissory note to the descendants of slaves. This weekend will see tens of  thousands of African Americans descend on Washington DC, where calls for reparations will once again be heard. Harvard University professor of law Charles Ogletree tells us about the long history of African Americans seeking some form of redress for slavery and the Jim Crow years of segregation that followed. Treaty lawyer Willie Te Aho reflects on the reparations made to Maori to date; and University of Auckland political scientist Dr Stephen Winter puts New Zealand’s efforts into an international context.