Thank you for the clarification. I'm not trying to claim that this isn't a finding that reflects xenophobia in some ways, but I'd like to point out that it's a fallacy to blame this entirely on the individuals with no non-white friends. I just don't believe that is a helpful perspective. What this number reflects is a highly ethnically segregated infrastructure (A), a very prominent cultural gradient between the ethnic groups (B) and an extreme conflation of class and ethnic groups (C). All these things are partially due to active racism and partially due to inherited structures that have historically grown. All these problems work together. A white person, growing up in a wealthy white suburb will mostly play with white kids, because (A). He will likely go to a good private school, where because of (C), by far most kids will also be white. Even if there are a few black kids around, because of (B) the chances of common interests or mutual understanding are low. Calling latter xenophobia is a little unfair as we don't usually call this tendency to prefer friends with shared experiences xenophobia.
I don't want to say these things are okay, they are not. I believe however that we need to change the language we use to talk about these things from a moralistic-authoritarian one to a more empathetic one, and empathetic means that we don't just try to understand the supposed victims, but also the supposed perpetrators. Just because one group appears to benefit from certain circumstances, doesn't mean that they are therefore personally, individually responsible for them. If in a situation like this, people don't work together, but instead antagonize each other, then we are very likely to create more problems than we solve.
