If someone travels a lot and goes to poorer countries, or sections of them - you will see some level of direct, or indirect violence/thievery etc. I try to avoid these areas if possible unless I am doing some type of related work. In DC - there is a disproportionate share of wealth and it's as polar a town as I have ever seen. As a bike rider I would never choose to ride through these areas as I am only increasing my chances of something bad happening to me.

That said - a greater level of policing is necessary if these types of incidences increases. And I am sure juvenile court is a hopping place in the DC Metro area.