Humans are Wired for Tribalism By Brian Simpson

     N. A. Christakis and J. H. Fowler, “Friendship and Natural Selection,” Proceedings of the National Academy of Sciences, July 22, 2014, present evidence that friends tend to exhibit “homophily” (“love of the same”) in their genotypes. Cutting to the chase, people in general tend to have racial kin as part of their friendship networks. Sure, there is variation to this, as there must be with any statistical generalisation, but, birds of a feather, really do flock together.

     US surveys show that Americans certainly choose racial kin as friends:
https://www.prri.org/research/poll-race-religion-politics-americans-social-networks/. As stated in an article covering this, “the average black person’s friend network is eight percent white, but the average white person’s network is only one percent black. To put it another way: Blacks have ten times as many black friends as white friends. But white Americans have an astonishing 91 times as many white friends as black friends.
There are a number of factors driving these numbers. Simple population counts are one of them: There are more white people than black people in the United States, so it makes sense that the average American is going to have more white friends than black friends.

     Another factor is our tendency to seek out and associate with people who are similar to us in any number of ways - religiously, politically, economically and, yes, racially, too. The polite term for this phenomenon is “sorting,” and it affects everything from political polarization to income inequality to the racial differences in friend networks seen above”: https://www.washingtonpost.com/news/wonk/wp/2014/08/25/three-quarters-of-whites-dont-have-any-non-white-friends/?utm_term=.6163a1594cb4.
    This has occurred even given the rampages of the bloodthirsty regime of multiculturalism, so it represents the reality of nature over artificial diversity.

     It is interesting to speculate as well, that once research becomes free of the present prison of political correctness, that thought may go to previously uncharted places. For example, P. Fischer (et al.), “The Ancestor Effect: Thinking about our Genetic Origin Enhances Intellectual Performance,” European Journal of Social Psychology, vol. 41, 2011, pp. 11-16, have found that subjects who thought about their ancestors – yes, their tribe – performed better than test subject who did not, on a number of intellectual tasks. They suggest that people in exams or job interviews may be aided by the ancestor effect, drawing, if you like, support from their tribe.

     “It is certainly desirable to be well descended, but the glory belongs to our ancestors” – Plutarch (46-120 AD)