A Thai armed soldier takes up position on a walkway at the entrance to Silom road in the financial district of Bangkok on April 19, 2010. Hundreds of Thai troops, many of them armed, were deployed on the streets of Bangkok to protect the city's financial heart from anti-government rallies. (Getty Images)

A Thai armed soldier takes up position on a walkway at the entrance to Silom road in the financial district of Bangkok on April 19, 2010. Hundreds of Thai troops, many of them armed, were deployed on the streets of Bangkok to protect the city's financial heart from anti-government rallies. (Getty Images)

Soldiers keep watch on an overhead crossing over Silom Road in Bangkok April 19, 2010. Thailand sent troops to Bangkok's financial district early on Monday a day after vowing to punish protesters if they march there, raising fears of more violence after bloody clashes killed 24 people a week ago. (Reuters)