Publicly, at least, Americans try to avoid stereotyping their fellow citizens based on race or ethnicity, gender or sexual orientation, age or religion. Doing so has become unacceptable, offensive to modern sensibilities, anathema to the notion that we’re all individuals, not just members of one or another demographic. This attitude is codified in our laws and enforced in our workplaces, and violating it is frowned upon in polite conversation.