Growing up, I learned about people, and history, not race, and how to be nice to minorities. I learned those things just by growing up with children of minorities, and playing basketball.
If children are brought up to be inclusive, and not taught about racism, in the long run, racism will diminish. There is no need for children in first, second, or third grade to learn how terrible people treated minorities in the past. It’s an important thing to learn, but it should be learned through history and through discussion among mature peers, not among toddlers. The more we teach our children about racism, the more they come to understand it and the chance of racism becoming a normality to them increases.
Of course we need to teach critical race theory, and help students understand why race shouldn’t change how you view a person, but not to 8-year-olds.