These months mark the sixtieth anniversary of the launch of Mao’s most infamous experiment in social engineering, the Great Leap Forward. It was this campaign that caused the deaths of tens of millions and catapulted Mao Zedong into the big league of twentieth-century murders. But Mao’s mistakes are more than a chance to reflect on the past. They are also now part of a central debate in Xi Jinping’s China, where the Communist Party is renewing a long-standing battle to protect its legitimacy by limiting discussions of Mao.