China.583.1-2 From The New York Times:

Thousands of police officers in Beijing and Shanghai stood guard on Wednesday in a show of force to ensure that one of China’s most sensitive political anniversaries did not erupt into a new wave of angry protests against Japan.

The May 4 anniversary, a pivotal date in defining modern Chinese nationalism, celebrates a famous student uprising in 1919 against Western colonialism, specifically the decision by World War I Allied powers to give Japan control of Germany’s colonial territories in China.

Thanks to yongliu for sending this link via del.icio.us.