World leaders join South Africans to memorialize Mandela

Aired: 12/10/2013 | 0:13:44 | Clip
Tens of thousands of mourners gathered at a Johannesburg stadium to mark the death of Nelson Mandela. President Barack Obama joined other world leaders in attending the memorial and eulogizing the former leader of South Africa. Gwen Ifill discusses the event with Charlayne Hunter-Gault, special correspondent for NBC News.