Most cities have a pro bono lawyers organization that you may contact to ask general questions. There is a very good one here in NYC so I can't imagine DC would not have such an organization. I think if you did a cursory search you would be able to come up with some contact information. It may also turn out to be a good resource for any steps you may want to consider taking.
It sounds like the usual inert wall of disinterest in such cases that many enforcement forces will put up just because of the identity of the victim.