Thai army soldiers check under the robes of a Buddhist monk they detained during an operation to evict anti-government "red shirt" protesters from their encampment in Bangkok May 19, 2010. Rioting and fires swept Bangkok on Wednesday after troops stormed a protest encampment, forcing protest leaders to surrender, but sparking clashes that killed at least four people and triggered unrest in northern Thailand. REUTERS/Damir Sagolj (THAILAND - Tags: POLITICS MILITARY CIVIL UNREST RELIGION)