Imo most peoples predjudices are based on an instinctive gut reaction, not logical thought. I know mine are. People react to others who look or sound weird or different. I'm comfortable with the smack addict who wears a suit and commutes to a job in the city, wary of the guy jacking up in a shop doorway. Probably comfortable round an Imam from Bournemouth, maybe not around one from Chechnya. Happy to be served by Katoey who is smooth chinned, soft voiced with feminine features - put off by a bestubbled 6'2" 14 stone hairy armed one in makeup and skirt. Its not rational - just the way people are imo.