Protesters march outside the Japanese Embassy in Beijing on Tuesday. The 81st anniversary of a Japanese invasion brought a fresh wave of anti-Japan demonstrations, with thousands venting anger over the colonial past and a current dispute involving contested islands in the East China Sea. (Associated Press)

Protesters march outside the Japanese Embassy in Beijing on Tuesday. The 81st anniversary of a Japanese invasion brought a fresh wave of anti-Japan demonstrations, with thousands venting anger over the colonial past and a current dispute involving contested islands in the East China Sea. (Associated Press)