Former Chinese leader Zhao Ziyang was ousted for opposing the bloody 1989 military crackdown on protesters in Beijing's Tiananmen Square. Twenty years after those events, veteran democracy activists say his efforts are not forgotten among the Chinese dissident community. Stephanie Ho reports from Beijing. ... Zhao Ziyang Beijing Tiananmen Square students pro-democracy democracy Bao Tong Communist Party Central Committee Ding Zilin ho voa news ...