Ignorance is natural - and racism is about ignorance.

It's impossible to overcome ignorance, but you can overcome racism - by focusing on that particular area of ignorance.

Essentially, our capacity is limited - regardless of our intentions. The utilitarian approach is to focus on those areas that bring the greatest amount of harm. I'd say racism qualifies - and as such, I think we should do what we can to educate about how racism harms us all in the long-term.