And which one it turns out to be has a big affect on the media's treatment of the event and it's usefulness to the gun grabbers out there.
The "black gang" shootings disappear from the agenda the moment the race of the perpetrator and victims are released. The "white kook" scenario is used to play the heart strings of suburban moms from coast to coast.
The larger question is why the media, the gun-grabbers, and the surburban soccer moms don't really care about black-on-black shootings.