HARDtalk on the Road - South Africa

Hardtalk is on the road in South Africa - a nation which two decades ago was seen as a beacon of hope for the entire African continent. Stephen Sackur visits a camp for African migrants in Durban; hundreds of mostly Congolese have been sheltering there since a wave of xenophobic attacks swept across South Africa last month. Why is immigration casting such a dark shadow over the rainbow nation?