Why are there so many black people in Philadelphia?

Philadelphia welcomes new immigrants and is more friendly to blacks.

Philadelphia is not so good, but it is not so terrible. Most people in Philadelphia are black. But most of them are friendly people. The mayor, police chief and education director of Philadelphia are all black. Of course, the president of the United States is also black now. Afraid of black people, don't come to America. Philadelphia welcomes new immigrants. There are 60,000 Chinese in Philadelphia. There are also many around. Be careful when you come. Don't go at night.