Hugh Masekela , Freshlyground and Soweto Gospel Choir among those added to concert . Local artists had been angry that South Africans would not be properly represented . Organizers initially named only three South African acts for June 10 line-up . - with co-collaborator Shakira , the multi-million-selling Colombian singer . The first day of the festival was marred by violence as police fired tear gas at a crowd throwing stones in Johannesburg.
Hugh Masekela , Freshlyground and Soweto Gospel Choir among those added to concert . Local artists had been angry that South Africans would not be properly represented . Organizers initially named only three South African acts for June 10 line-up . - The first day of the festival was marred by violence as police fired tear gas at a crowd throwing stones in Johannesburg.