South African Deputy President Cyril Ramaphosa, former South African President Thabo Mbeki and Graca Machel, wife of the late South African President Nelson Mandela, attend the funeral of Ahmed Kathrada at Westpark Cemetery in Johannesburg, South Africa, on March 29, 2017. South African anti-apartheid stalwart Ahmed Kathrada died in the early hours of Tuesday morning at the age of 87. (Xinhua/Zhai Jianlan)