Iowa: 3.1%. According to our research of Iowa and other state lists there were 2 registered sex offenders living in Aurora, Iowa as of September 06, 2015. The ratio of number of residents in Aurora to the number of sex offenders is 86 to 1.
William G. Sumner, who coined the term ethnocentrism, is famously known as America's first sociology professor. He taught social sciences at the Yale University. It is wondrous, really, how this world is made up of so many different people belonging to different races or ethnicities.
Ethnocentrism is a commonly used word in circles where ethnicity, inter-ethnic relations, and similar social issues are of concern. The usual definition of the term is thinking one's own group's ways are superior to others or judging other groups as inferior to one's own.