Its largely with the help of the media. Have you seen, in the last twenty years, any TV show or movie where the criminal is anyone but a white man? Even street gangs and drug dealers on TV are all white males. And the most vile criminals on TV and Movies are white male business men. This constant barrage of negative images have an impact. Entertainment is the most powerful force in the US today, more powerful than education or politics. People see a white man in a suite like Romney and Ryan and they instantly think, evil.