Reddit mentions of Deep South: A Social Anthropological Study of Caste and Class (Southern Classics)

There is a difference between race and ethnicity. Ethnicity is a self-identification based on both genetic links and a common set of history, tradition, language, and/or religion of held by a population group. Race is a social construct that was invented around the time of Europe's age of Exploration that generalizes the tens of thousands of ethnic groups around the world into five or so "races". Race is often conflated with ethnic origin but usually has very little genealogical or cultural basis. In the United States especially, race has more similar features to a socio-political caste system than actual ethnic divisions.

When you ask about non-European groups having "racial pride", this is often an expression of ethnic pride rather than American racial castes. Although American black pride movements often seek solidarity with Africa and other African diaspora cultures, it is based around the distinct Afro-American ethnicity (African immigrants often have as much trouble assimilating to Afro-American culture as European immigrants do to white America). Likewise, Asian pride centers around actual places of origin: there are Koreatowns or Chinatowns in many American cities, but you would never see an "Asiatown". Finally, there is certainly room for European-descent Americans to show pride in their ethnic tradition, just based around real cultures rather than artificial racial boundaries. There is absolutely nothing wrong with showing Irish pride at St. Patrick's day, German pride during Oktoberfest, or even celebrating distinctly American ethnicities like Appalachian or Louisiana Cajun peoples.