Thai police riot throws tear gas to anti-government protesters in front of Parliament in Bangkok Tuesday, Oct. 7, 2008. Police fired gear gas Tuesday at several thousand demonstrators attempting to block access by lawmakers to Parliament, heating up a political crisis that has gripped the country for six weeks. AP Photo by Wason Wanichakorn

An anti-government demonstrator runs away from riot police after they fired tear gas at protesters blocking Parliament in Bangkok October 7, 2008. Thai police fired tear gas at anti-government protesters on Tuesday, clearing them from a road to Parliament after they had vowed to stop Prime Minister Somchai Wongsawat delivering his maiden policy speech. At least 50 people were injured, three seriously, hospital officials said. (Reuters)

Anti-government demonstrators attempt to fight back from behind a barrier blocking Parliament after they were hit by tear gas from riot police in Bangkok October 7, 2008. Thai police fired tear gas at anti-government protesters on Tuesday, clearing them from a road to Parliament after they had vowed to stop Prime Minister Somchai Wongsawat delivering his maiden policy speech. At least 50 people were injured, three seriously, hospital officials said. (Reuters)