Nazi Germany's expansion eastward, in 1941 Hitler stated, "Our Mississippi [the line beyond which Thomas Jefferson wanted all Indians expelled] must be the Volga." White supremacy was dominant in the U.S. from its founding up to the civil rights movement. On the U.S. immigration laws prior to 1965, sociologist Stephen Klineberg cited the law as clearly declaring "that Northern Europeans are a superior subspecies of the white race." While anti-Asian racism was embedded in U.S. politics and culture in the early 20th century, Indians were also racialized for their anticolonialism, with U.S. officials, casting them as a "Hindu" menace, pushing for Western imperial expansion abroad. The Naturalization Act of 1790 limited U.S. citizenship to whites only, and in the 1923 case, United States v. Bhagat Singh Thind, the Supreme Court ruled that high caste Hindus were not "white persons" and were therefore racially ineligible for naturalized citizenship. It was after the Luce–Celler Act of 1946 that a quota of 100 Indians per year could immigrate to the U.S. and become citizens. The Immigration and Nationality Act of 1965 dramatically opened entry to the U.S. to immigrants other than traditional Northern European and Germanic groups, and as a result would significantly alter the demographic mix in the U.S. 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. Shortly after World War II, the South African National Party took control of the government in South Africa. Between 1948 and 1994, the apartheid regime took place. This regime based its ideology on the racial separation of whites and non-whites, including the unequal rights of non-whites. Several protests and violence occurred during the struggle against apartheid, the most famous of these include the Sharpeville Massacre in 1960, the Soweto