A Buddhist monk who was detained by Thai army soldiers sits with his hands tied during an operation to evict anti-government "red shirt" protesters from their encampment in Bangkok May 19, 2010. Anti-government protest leaders in Thailand surrendered to police on Wednesday after troops stormed their encampment, sparking clashes that killed at least four people, but violence rocked other areas of the city. REUTERS/Damir Sagolj (THAILAND - Tags: POLITICS MILITARY CIVIL UNREST RELIGION)