>Ethnocentrism is the act of judging another culture based on preconceptions that are found in values and standards of one's own culture.[1][2] Ethnocentric behavior involves judging other groups relative to the preconceptions of one's own ethnic group or culture, especially regarding language, behavior, customs, and religion. These aspects or categories are distinctions that define each ethnicity's unique cultural identity.[3]
>William G. Sumner defined ethnocentrism as "the technical name for the view of things in which one's own group is the center of everything, and all others are scaled and rated with reference to it." He further characterized ethnocentrism as often leading to pride, vanity, belief in one's own group's superiority, and contempt for outsiders.[4] These problems may occur from the division of societies into in-groups and out-groups.[5] Ethnocentrism is explained in the social sciences and genetics. In anthropology, cultural relativism is used as an antithesis and antonym to ethnocentrism.[6]
https://en.wikipedia.org/wiki/Ethnocentrism
They teach this crap.
https://www.amazon.com/Culture-Warrior-Bill-OReilly/dp/0767920937
one of the classics