In Tibet, the majority of Muslims are Hui people. Hatred between Tibeans and Muslims stems from events during the Muslim warlord Ma Bufang's oppressive rule in Qinghai such as Ngolok rebellions (1917–49) and the Sino-Tibetan War, but in 1949 the Communists put an end to the violence between Tibetans and Muslims, however, new Tibetan-Muslim violence broke out after China engaged in liberalization. Riots broke out between Muslims and Tibetans over incidents such as bones in soups and prices of balloons, and Tibetans accused Muslims of being cannibals who cooked humans in their soup and of contaminating food with urine.