Serious race riots in Durban between Indians and Zulus erupted in 1949. Ne Win's rise to power in Burma in 1962 and his relentless persecution of "resident aliens" led to an exodus of some 300,000 Burmese Indians. They migrated to escape racial discrimination and wholesale nationalisation of private enterprises a few years later, in 1964. The Zanzibar Revolution of January 12, 1964, put an end to the local Arab dynasty. Thousands of Arabs and Indians in Zanzibar were massacred in riots, and thousands more were detained or fled the island. In August 1972, Ugandan President Idi Amin started the expropriation of properties owned by Asians and Europeans. In the same year, Amin ethnically cleansed Uganda's Asians, giving them 90 days to leave the country.