Rep. Kim Seon-dong of the opposition Democratic Labor Party (center bottom) is blocked Nov. 22, 2011, by a security officer as National Assembly Vice Speaker Chung Eui-hwa (center seated) covers his face after Kim exploded tear gas to try to block the passage of a bill on ratification of a South Korea-U.S. free trade agreement at the National Assembly in Seoul. (Associated Press)

Photo by: Chun Soo-young

Rep. Kim Seon-dong of the opposition Democratic Labor Party (center bottom) is blocked Nov. 22, 2011, by a security officer as National Assembly Vice Speaker Chung Eui-hwa (center seated) covers his face after Kim exploded tear gas to try to block the passage of a bill on ratification of a South Korea-U.S. free trade agreement at the National Assembly in Seoul. (Associated Press)