Do you honestly believe folks who begin to echo racist ideas about social relations did not have racist thoughts prior, but were 'introduced' to them via mass m

Do you honestly believe folks who begin to echo racist ideas about social relations did not have racist thoughts prior, but were 'introduced' to them via mass media? I understand that many people want to believe their elders are good, rational, intelligent people, and it's that damn media diet. I'm sorry - it's not McDonalds that makes people obese, it's people willing to become obese that continue going to McDonalds.