Racism is a learned behavior. It can be learned by anyone, regardless of their own race or ethnic group. To assert that it can be limitted to the racial/ethnic group 'in power' is an absurd argument, often used by some to explain racism by any other group as merely a 'reaction' to having been exposed to it. It is natural, and not racist at all, to generally associate with those that you feel most comfortable with. This is seen in nearly all social settings, that tend to 'naturally' segregate, based on many factors, including race. I think that we all tend to associate with those we identify with as similar, for example at the beach or park we often tend to go toward a group that appears desirable to us based on age, race and gender composition. It is rare indeed for the young to seek out a group of the old, for the single to seek a group of couples or for the Spanish speaking to seek out a group of English speaking people.