The Great Helmsman a beacon for rage by emerging Chinese FOR many years, a giant framed portrait of Mao Zedong has hung on the wall of The Times's bureau in Beijing. It is the same picture of Mao that watches over Tiananmen Square and certain living rooms across China. Last week, when a family of Uighurs chose the perfect spot for a suicide protest, they ploughed their car into the Tiananmen Gate, killing bystanders and themselves as flames and smoke belched across Mao's face. Various correspondents have covered China from this desk - filing stories on censorship and torture, exuberance and protest, fungus speculation and pandas - and the Great Helmsman has loomed above us all: his faint beatific smile supplying a constant and morbid taunt of history.