While in a black area of Philadelphia, I saw black kids throwing rocks off of a train platform (not the subway) so I called the police. They endanger people and it reminded me of Arabs throwing rocks from Damascus Gate to the archeological area below. Also, a white Marine veteran in the area told me that he hates when they ask for things. He agreed with me that they ask any white person in a black neighborhood for money or try to sell white people things (like Arabs due to tourists in Israel). They (blacks and Arabs) also ask if you need a taxi.