Demonstrators raise placards with sanitary napkins and defaced pictures of Japan's Prime Minister Yoshihiko Noda (L) and Japan's Foreign Minister Koichiro Gemba, as they chant slogans during a protest on the 81st anniversary of Japan's invasion of China, outside the Japanese embassy in Beijing September 18, 2012. Hundreds of Japanese businesses and the country's embassy suspended services in China on Tuesday, expecting further escalation in violent protests over a territorial dispute between Asia's two biggest economies. REUTERS/David Gray (CHINA - Tags: CIVIL UNREST POLITICS ANNIVERSARY)