First off, as a resident of the wonderful District of Colombia, I'd like to note that the gun violence is mostly limited to certain sections of the city (i.e. the East half), which just happens to also have poverty and racial problems (go figure). I live in the NW and my greatest fear for my safety is that some diplomat will run me over b/c he can't be prosecuted. Yet, in any case, the Supreme Court is hearing arguments about the constitution, which should, in theory, be separate from arguments about what makes good policy. As Chief Justice John Marshall once said, the Constitution doesn't prevent stupid lawmakers from passing stupid laws.
That said, it looks like the Court will come down squarely in favor of the individual rights model and the question will be mainly about the contours of the amendment, i.e., what types of gun regulation is allowed or how will courts determine what regulations pass constitutional muster. It'll be interesting to see what sort of reasoning the Court uses, as originalist principles could easily lead to a collective right view (only two states definitely held the individual rights view at the time the 2nd Amendment was written, PA and another one that presently escapes me). Silberman's circuit court opinion was an impressive recounting of history, but then again the dissent was horrible, so he didn't have a solid critique. I think the individual rights view is on the strongest ground if they use a structural argument, but we'll see.