A black nationalist Muslim movement arises in the 1890s or early 1900s and gains much more success than the Moorish Science Temple, the Nation of Islam, or other similar groups did IOTL. Rather than remain divided around the country, the group's leadership decides on a bold move - emulating Brigham Young and Mormonism's success in establishing its own demographic and political dominance within a state, they undertake a political migration to a western state to achieve black self determination. By 1930, 100,000 followers migrate to Nevada, becoming the majority despite legal and violent resistance by white Nevadans, many of whom decide to flee the state. They quickly become the dominant voting block, electing officials vetted by the clerical leadership, a certain point of conflict with the federal government. Other African Americans are drawn to Nevada and many convert to Islam. Black rule, combined with the preferential treatment of black owned business interests as called for by the NOI, hardens the position of southern whites against any civil rights reform whatsoever and leads to efforts to expel blacks to Nevada, creating conflict with the federal government. Nevada becomes a place to escape to for southern blacks, causing a steady immigration to Nevada into the late 20th century. Race politics in the US is somehow even more of a nightmare.