People all over the world, in every aspect of lives demonstrate kin selection over non kin.
In marriage, in reproduction, in friendships, in workplaces, in neighborhoods, in political parties.
As far as I know the topic of “Racism” is just another means of rebelling against the aristocracy in a global order, as was rebelling against the landed nobility in the national order.
It’s total nonsense. People are racist in every aspect of life.
The difference is, that in the consumer market place, our money is all green, and in the court of law justice is blind.
So, in the end, unless you want to steal from another ‘tribe’ that’s all that matters.