Ordinary people aren't brainwashed in to racism, a tiny percentage of people who are exposed from an early age to extreme ideologies like those of the white supremacist movement might be, but in general that isn't the case. And ignorance isn't an excuse, I've met plenty of people who came from backgrounds were they would have had no or very little exposure to people of colour, or to stay OT- gay people, who are still open minded and show no propensity to make the kinds of unpleasant generalisations by which prejudices operate.
did the descriptionof the man NCbear gave make him sound like an "ordinary white guy" to you? honestly?