Thai Buddhist monk Phra Buddha Issara smiles as he arrives at the Thai Police Crime Suppression Division headquarters in Bangkok March 2, 2015. Buddha Issara is calling for a radical overhaul of Thai Buddhism, fearing millions of dollars in temple donations and a rapidly modernizing nation are corrupting monks. Buddha Issara played a prominent role in sometimes violent street protests last year that helped to overthrow the elected government of Prime Minister Yingluck Shinawatra. REUTERS/Chaiwat Subprasom (THAILAND - Tags: RELIGION POLITICS)