Extremist prejudice persists by insulating members from broader cultural norms.

Evidence

Thus, for example, extremist groups, such as the Ku Klux Klan or other white-pride groups, Black separatist groups, and secessionist movements persist in the US, despite their deviation from the culture-at-large. Different subgroups have their own prejudices, and people who are part of the local culture will share the local culture’s values. By limiting their contact with the rest of the culture, the prejudices of extremist groups can persist and even flourish (Myers & Bishop, 1970). — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice, 1912

Categorization

• corroborated: 2 independent passages support this claim — John F. Dovidio, Peter Glick, Laurie A. Rudman, On the Nature of Prejudice: Fifty Years…, 1912
• XREF: connects to: Collective delusions like anti-Semitism persist because they function as tolerated outlets within a culture — Rolf Wiggershaus, The Frankfurt School: Its History,…, 1793; Minor offenses and dissonance are inseparable from multicultural contact — Amit Singh, “Carnal conviviality” and the end of…, 82; Authoritarian-era rhetoric norms constrain whether elites can later mobilize voters through ethnic hostility. — Johan Brosché and Hanne Fjelde and Kristine Höglund, Electoral violence and the legacy of…, 97 (+1 more)