Any suggestions?

How do you change someone's attitudes? How do you encourage someone to open their mind? How do you do you fight the racism that is so ingrained in someone because they've been brought up with it- from infancy they have been taught to scorn everyone who is different from themselves? When it runs that deep, when they've been trained and formed to think that way, when it's completely irrational but so deeply rooted in them, how, HOW, do you encourage change? There must be a way...