Anti-nuclear protesters hold placards as they shout slogans during a march in Tokyo April 10, 2011. Japan hopes to stop pumping radioactive water into the sea on Sunday which should help ease concerns in neighbouring China and South Korea over the spread of radiation from the worst nuclear crisis since Chernobyl. The placards read, "No Need Nuclear Power Plant" and "Change Energy Policies". REUTERS/Issei Kato (JAPAN - Tags: DISASTER ENERGY ENVIRONMENT CIVIL UNREST)