Chinese people and world peace activists attend a rally to commemorate the victims of the Nanjing Massacre in 1937, at the square in front of the Nanjing Massacre Museum in Nanjing, Jiangsu province, Dec. 13, 2007. Japanese troops killed more than 300,000 Chinese civilians and captives, raped more than 20,000 and burned down one-third of the urban buildings, according to historical documents. [Xinhua]