They just believe that if one should hang out with the race group one belongs to and should not try to resort to other race groups. Intrinsic racism comes naturally and is not a learned characteristic compared to extrinsic racism.
The focus of analyzing Appiah's article will mainly deal with explaining the Family Model using the different elements of intrinsic racism. One of the important factors that intrinsic racism holds is that people who are intrinsic racists have cognitive incapacity. Appiah believes that people who have cognitive incapacity are "people who are unable to give up beliefs that play a part in justifying the special advantages we gain from our positions in social order- in particular, beliefs about the positive character of the class of people who share that position" (Appiah 2012, 631). People who hold this factor of cognitive incapacity believe that preferring their own race is like preferring your family, which leads to the conclusion of not being morally wrong for thinking that. They believe it is not morally wrong because your family is the closest factor to you because of biological relatedness. For example, if my father, who is Korean-American, ran for president against Obama, I would be in favor of my father because he is simply my father. This would be the same as if the Koreans in the Asian community was in favor of picking my father over Obama simply because my father is Asian. If this scenario were reasonable it would show that intrinsic racism is not morally wrong. However, intrinsic racism is a moral destruction. With race, the biological components are the key of creating hierarchies within the race groups but for families, the biological components may be the basis of choosing the primary preference but other components such as the development of connection and moral obligations become important too.
Because Appiah disagrees with the first preposition of the family model he also believes that intrinsic racism is a moral destruction.