Most Unitarian-Universalists are white; on average they are not poor; the denomination’s roots are Protestant Christian, as are many of their institutional structures, forms of service, and fundamental thought processes about religion. A great many of them were actually raised in at least nominally Christian households and are fluent in North American Christian language, bodily practices, and perspectives. Universalists and especially the Unitarians drew on the power elite of American society, and have always enjoyed above average rates of education, literacy, and self-representative forms of media. Politically most are center-left Democrats, a position with plenty of national representation even in the hardest times, and at intervals actual dominance of national politics.
Most Unitarian-Universalists are not professing Christians; many are not monotheistic at all; the differences between the average UU and the average Christian are often extremely difficult for non-Christians to discern but certainly clear and important to many Christians. There are Christian groups that explicitly exclude and condemn UUism, books written to catalog the religious heresies of UUism as a “cult,” and plenty of cases of overt discrimination against individual UUs.
Regardless of their individual theology, most UUs can (and in many cases do) “pass” as average, at least vaguely Christian Americans and Canadians. On the whole they have a much easier time doing so than light-skinned racial minorities, Jews, immigrants, or other minorities who often seek to pass as a dominant group or at least allow themselves to pass in some social situations.
Are UUs part of the majority culture in North America, or are they an outnumbered minority? Are they safe or potentially endangered? Are they part of the power structure or disenfranchised? It is possible to belong to BOTH categories simultaneously?