What did Mandela’s presidency mean for South Africa today?

While Nelson Mandela remains a larger-than-life symbol of historic change, there's a national debate going on in South Africa over the nation's progress since its turn to democracy. Mandla Langa, a writer and former activist, hopes that Mandela's words and deeds, collected in his new book, “Dare not Linger,” can help guide for the country moving forward. Jeffrey Brown talks with Langa.