@ResIpsaLoquiturInterAlia
This is a strange thread suggesting that one chooses friends and vice versa - friends choose me because of issues other than being friendly and sharing something in common. Naturally having a common interest may be more conducive to friendship. This may or may not correlate with race. Racial ethnicity is not the overriding factor determining friendships but may be a coincidence.
I don't find it a strange thread at al!
Surely 'being friendly and sharing something in common' are the very things we are discussing?
What causes two people to 'be friendly'? How do they come to be in the same space? Are there barriers to entry to that space? Is everyone there on the same terms or are some of the people invisible or completely inaccessible to the others? Is it likely that particular sections of society might never, in a lifetime, find themselves in that space, so never have the opportunity to find friends amongst that group? And what does that mean - for politicians, teachers, this year's university applicants?
And what life experiences mean we will 'share something in common' with another person? How likely are two people, living in the same street, queuing at the same grocer's (something in common) to become friends? All that two people with membership of the same gym might share in common is the ability to pay the subscription. Maybe ethnicity is the only thing that prevents them from knowing each other better?
And coincidence? Is it coincidence that I was the only person of my 'type' at my Oxbridge college - or were there reasons why that was the case? What effect did that have, on not just my potential friendships, but my life chances over a lifetime? And the potential friendships, attitudes, thoughts, government policies developed by every single other undergraduate in my year?
I'm not entirely sure you would be so dismissive if you had truly thought about the question, ResIpsaLoquiturInterAlia.