Thousands of protesters besiege offices of Thai leader

Thousands of anti-government protestors led by the People's Alliance for Democracy (PAD) hold a large rally outside the Government House in central Bangkok, Thailand, June 20, 2008. The demonstrators marched from different directions towards the Government House in central Bangkok on Friday to mount a planned besiege to pressure for a step-down of the administration led by Prime Minister Samak Sundaravej

Riot police block supporters of the People's Alliance for Democracy (PAD) from marching towards the Government House in Bangkok, Thailand, June 20, 2008