From the demographics of the area, this is very likely to be mostly black on black homicides.
You bet, black on black. Quite a few years ago- like over 20, I walked from the Metro station nearby past 8th and I Marine HQ Barracks and down to Anacostia Navy Yard, where there are fantastic static displays (like a section of the battleship Yamato with a 16 inch shell hole through 2.5 foot thick armor steel, and the steel was “fractured” like it was butter and the knife has put airholes in it as it past through).
The walk to the Yard was at that time— concerning as to street safety. Carrying gave some security to me, but still it was dangerous ground. Wouldn’t do it now.