the so-called "system racism" and "white privilege" that democrats talk about constantly.
If blacks were the majority and most of them preferred working with members of their own race — and acted accordingly — it would be equally problematic.
By the way, you basically made this point below -
http://www.tigerboard.com/boards/view.php?message=17537498
It's tribalism, but you don't seem to recognize it when the racial roles are reversed.