I think software dev has interesting cliques. I would imagine most government/security work is white and a rare black due to American citizenship ( this may change over the next two generations depending on various political relationships.).

I have the exact the opposite experience in tech. I can count the whites with my fingers. Granted, blacks appear to be rare as well, but there are plenty of Asian and Indian.

What would be very interesting is to see how this changes over the next few generations. I optimistic, in a south park kind of way, that race will not be an issue in four generations. I guess one could say that would be a pessimistic viewpoint.... I mean it sure is depressing that we can't unify for... I don't space or something more interesting...