Thousands of people carrying anti-globalization placards demonstrated in central Seoul on Sunday against a meeting of Pacific Rim leaders set to promote trade liberalization this week. More than 18,000 protesters near the U.S. Embassy also denounced a visit by U.S. President W. Bush, who is one of 21 leaders due to attend the two-day Asia-Pacific Economic Cooperation summit set to open Friday in the southern city of Busan. "We oppose Bush's visit, we oppose APEC," read placards carried by protesters, members of one of the country's two umbrella labor groups. Some marched with masks of Bush's face. The protesters also called for fair treatment of temporary workers, according to a report of the Associated Press.