The annual prayer service remembering those who took part in the peaceful demonstrations in Lhasa, Tibet in 1989, protesting against Chinese rule in Tibet, was held in Dharamshala, organised by the Tibetan Government in Exile. In 1989 the Chinese authorities declared martial law and many Tibetan protestors were killed, injured and imprisoned, many have not been heard of since. The martial law remained in place for 13 months.