Ethnic diversity isn't of much interest or value to little kids. They need to learn to deal first with all the human diversity that is found in even the most mono-ethnic communities: young and old, boy and girl, and all the different personality types that you see even in one extended family. Further, kids need some homogeneity and safety so they can learn independence. Before the great crime wave began in the 1960s, kids used to walk or ride their bikes everywhere. Now, moms chauffeur their kids everywhere, which is bad for kids and bad for women.
Read more from Luke Ford's interview of Steve Sailer.