Chinese authorities have cracked down on a grassroots Tibetan unity campaign in Chamdo’s Damthok and Tsala villages. Police detained about 480 Tibetans who were found wearing special armbands or carrying photos of the 11th Panchen Lama. The detentions were triggered when police found three Tibetan truck drivers wearing “unity” armbands and in possession of the Panchen Lama’s photos, a local source told Radio Free Asia.