A masked demonstrator shows a police hat burned during a demonstration marking the May Day celebrations in downtown Santiago, Chile, Monday, May 1, 2006. Police used water cannons to scatter dozens of rock-throwing demonstrators as violence erupted during a May Day rally. (AP Photo/Santiago Llanquin)
A protester grabs a tear gas canister thrown by riot police during clashes in the western Turkish city of Izmir May 1, 2006. Demonstrators refused to be searched by police as they entered a square where they gathered to celebrate May Day before riot police dispersed them. REUTERS/Stringer
Russian members of the Red Youth Avant-garde (AKM) organization shout anti-government slogans during a May Day protest in Moscow.
South Korean riot policemen stand guard on a buring barricade as workers throw stones towards them during a May Day rally in front of a factory of Hyundai Hysco in Sunchon, about 420 km (261 miles) south of Seoul May 1, 2006. About 1,000 workers from the Korean Confederation of Trade Unions (KCTU), including non-regular workers of Hyundai Hysco, a steel-manufacturing arm of the Hyundai Motor Group, rallied on Monday to demand that government let workers punish Hyundai Motor Group chairman Chung Mong-koo and that the company stop suppressing labour movement of the workers. REUTERS/Lee Jae-Won