ethnocentrism

this is the belief that the ways of one's own group are (1) natural, (2) right for everybody, (3) superior to others' ways, (4) require no designating adjectives. As it is most often used, "ethnocentrism" refers to white people seeing themselves as the center and norm, with everyone else being variations on the theme. To avoid inadvertent ethnocentrism in your writing, imagine the issue from another group's point of view.