Okay kiddo, let me tell you about a very smart man called Harry Edwards. He is a special kind of scientist called a sociologist, and he studies how people live together and why they do the things they do.
Harry Edwards is also interested in sports, and he realized that some people who play sports are treated differently because of the color of their skin. This means that if someone has darker skin, some people will treat them unfairly or make it harder for them to play sports. That's not very nice, is it?
So Harry Edwards started speaking up about this problem and helped athletes who were being treated unfairly, and he also talked to other people and got them to understand, too. Because of his work, more people started paying attention to this unfairness, and things started to get better over time.
In fact, Harry Edwards has done so much good work that he was even honored by a famous person called Barack Obama, who was the President of the United States. That's how important and helpful Harry Edwards has been!