Earlier quoted context omitted.
If you’re part of the majority group, you really don’t see how cliquish people in minority groups are. Every time I get into a cab with another “brown” person, there is a Q&A. When they find out I’m from a muslim country, it’s all “my brother,” etc. I’ve always found it distasteful.
People in general tend to be very tribal -- it's in our DNA. When it's about "yay community!" its kinda nice but most the time it's "other tribe bad". I think this is a core to a lot of legislation. Not having a tribe to belong to I find the whole thing simultaneously amusing and horrifying looking in from the outside.
In terms of social life, and romantic life, it's interesting how heavily we rely on shared/common background, which tends to cause this clustering effect.