According to Wikipedia,

Ethnocentrism is the tendency to look at the world primarily from the perspective of one's own culture. It is defined as the viewpoint that “one’s own group is the center of everything,” against which all other groups are judged. Ethnocentrism often entails the belief that one's own race or ethnic group is the most important and/or that some or all aspects of its culture are superior to those of other groups. Within this ideology, individuals will judge other groups in relation to their own particular ethnic group or culture, especially with concern to language, behaviour, customs, and religion. These ethnic distinctions and sub-divisions serve to define each ethnicity's unique cultural identity.

Hmmmm I know someone who's ethnocentric....
MY MOTHER!!!!!!!!!!!!!!!!!