As a rule of thumb I don't discriminate against people based on things they don't choose, that do not have direct negative externalities.
The way people dress, their income level, etc are far better factors to discriminate agins people based on if it is a certain type of behavior you are trying to generalize and attribute to a group of people.
Creating a identity based on being a certain race is dumb it's something you resort to when you are insecure of your self-worth. Race is the perfect compensation, no one can take it away from you and you have done nothing to deserve it.