Man walks past alter of the late Zhao Ziyang in Hong Kong.
A man walks past an alter for China's late former Communist Party chief Zhao Ziyang in Hong Kong, the only city in China where public mourning of Zhao is not banned, in the evening of January 19, 2005. China has stepped up controls on dissidents in an attempt to prevent public mourning for ousted Communist Party chief Zhao, whose death on Monday has sparked fears among the leadership of possible unrest. Chinese characters beside Zhao's photograph read 'To mourn Ziyang, to vindicate June 4th (1989 pro-democracy movement). REUTERS/Bobby Yip BY/LA