The more you expose him to others the more secure he will be. This includes television shows, friends and family. Vacations and outings about town. The more he sees you interact with others the more comfortable he will be. I am african american and when I see a caucasion child act like they don't want me near them, the first thing I think is that his parents are racists and don't expose and encourage him to be with others not like himself. My 3 children have been held, kissed and played with by an equal amount of both white and black friends and families. I choose their school because of the diversity. Children are products of their environment thus we can control and encourage at early ages, that's my humble opinion.