Tibetans in exile participate in a 24-hour hunger strike at the Tibetan Welfare Centre, Boudha in Kathmandu yesterday. Some 20 Tibetans in exile expressed solidarity with compatriots who were victims of a Chinese crackdown in Ngaba, Sichuan Province last month. Chinese security forces last month enforced a crackdown on Tibetans who protested following the death of a young monk who set himself on fire on the third anniversary of violent protests against Chinese rule in Tibet