The glittering glass-and-steel Bank of China, Southeast Asia's tallest building and a prominent addition to Hong Kong's spectacular skyline, was to embody the faith that both Hong Kong and China placed in a common future, a visible symbol of the "one country, two systems" promised when the British crown colony reverts to China in 1997. Last week two enormous black-and-white banners drooped across the tower's facade bearing a grim message in Chinese characters: BLOOD MUST BE PAID WITH BLOOD.
Overnight the savage massacre in Tiananmen Square shattered Hong Kong's wary faith in that future. Thousands donned funeral garb to mourn the...