Wikipedia, Jan. 12, 2012 (White nationalism is a political ideology which advocates a racial definition of national identity for white people. White separatism and white supremacism are subgroups within white nationalism. The former seek a separate white nation state, while the latter add ideas from social Darwinism and National Socialism to their ideology. Most white nationalists are separatists, and only a smaller number are supremacists)

Southern Poverty Law Center website, Jan. 12, 2012 (the white nationalist movement; white nationalism; white nationalist groups espouse white supremacist or white separatist ideologies, often focusing on the alleged inferiority of non-whites. These groups range from those that use racial slurs and issue calls for violence to others that present themselves as serious, non-violent organizations and employ the language of academia)

Merriam-Webster online, Sept. 22, 2021: white nationalist (one of a group of militant white people who espouse white supremacy (see WHITE SUPREMACY sense 1) and advocate enforced racial segregation) white supremacy (1. the belief that the white race is inherently superior to other races and that white people should have control over people of other races; 2. the social, economic, and political systems that collectively enable white people to maintain power over people of other races)

LCSH viewed, February 18, 2022 (heading: White nationalism (May Subd Geog); UF Nationalism--White people, Nationalism, White, Supremacy, White (White nationalism), White supremacy (White nationalism); BT White people--Race identity)