Buddhist monks and nuns take part in a Buddhist memorial service to demand the full-scale renegotiation of the U.S. beef import deal and the resignation of South Korean President Lee Myung-bak in central Seoul July 4, 2008. South Korea has seen street protests on nearly a nightly basis since early May. What began as candle-lit rallies voicing concerns about mad cow disease infection from U.S. beef soon became a lightning rod for criticism of Lee. REUTERS/Jo Yong-Hak (SOUTH KOREA)