To overcome your internalized racism you should first be honest with yourself and think about what really differentiates you from another race, and the things in which they resemble each other.
You could also make friends with people of other races and learn about other cultures. But the first premise you should keep in mind is: forget the stereotypes, we are all different.
In addition, he should practice the principle of tolerance, as an attitude, as a way of life. In 1995, UNESCO endorsed the following:
Tolerance is the recognition and acceptance of differences between people. It is learning to listen to others, to communicate with them and understand them. It is the recognition of cultural diversity. It is to be open to other ways of thinking and other conceptions, openness derived from interest and curiosity, as well as refusing to reject the unknown.
Hope this helps ;)
