All human beings are, to some extent, ethnocentric. Anthropologists generally define ethnocentrism as the view held by members of a particular culture that the values and ways of one's own group are superior to others, and that all other cultures are judged inferior with reference to this view. Ethnocentrism rests upon the assumption that the worldview of one's own culture is central to all reality. 

An ethnocentric person expects everyone to think and behave like him after, of course, you scrape away the superficial differences such as colorful clothing, unusual food, quaint practices, and even skin color. This person also believes his or her culture is the best, superior to all others. 

Ethnocentrism and the assumption of the “centrality” of one’s own culture lies at the root of racism, negative evaluations of dissimilar cultures, and the construction of in-group/out-group distinctions.