S4 on 16th street southbound 4:45pm got on. Bus was packed. My backpack brushed a black woman. She proceeded to snarl and call me rude and another peer said the same thing that I was supposed to apologize. Since it was crowded it couldnt be helped and it had not hit her just brushed another standing passenger. Both women proceeded to escalate because i called them rude. For the IT WAS ALL ABOUT THE PERSON NOT THE BEHAVIOUR. Driver pulled over while black woman began shouting i need to get off. I got off while driver was talking with another metro security. It was blatant racism and total lack of understanding instead that black woman all she wanted was more space to stand. The metro wmata would not take my call. When i called customer service the receptionist answered then hung up. Very lousy experience. Talk about how blacks destroy the very institutions that are supposed to help improve their lives just to get some race pie to eat.