well maybe you have bad luck. DC used to be the murder capital of the world, so walking though south east or anacostia aint' exactly walking in the park.
Like I said, trouble finds those who look for it.
I'm not trying to say that everyone in the ghetto is all nice and friendly, but the ghetto ain't exactly a nice and friendly place to live. Also you don't see any middle to upper class black folks driving through the ghetto, so it isn't really a black on white thing, it's more of a class thing if you ask me.