We all know we are unique individuals, but we tend to see others as representatives of groups.
Deborah TannenThe argument culture urges us to approach the world - and the people in it - in an adversarial frame of mind. It rests on the assumption that opposition is the best way to get anything done: The best way to discuss an idea is to set up a debate; the best way to cover news is to find spokespeople who express the most extreme, polarized views and present them as 'both sides'; the best way to settle disputes is litigation that pits one party against the other; the best way to begin an essay is to attack someone; and the best way to show you're really thinking is to criticize.
Deborah Tannen