...strip out the suicides and gang bangers and you have a different story.
We talked about the suicides already, how many of them might be prevented by more difficult access to guns. I'm thinking in particular of teens, whose impulse control is not fully developed but who are quite capable of shooting themselves, and do so. You ought to retract the comment about disregarding suicides, because it's not a good reason to maintain and improve the ready availability of guns.
We haven't said anything about your "gang bangers." You are treating these as if they are non-humans.
First off, gang members shoot the innocent, including babies, little children in parks, and people sitting on their porch minding their own business. Those deaths are surely not too unimportant to notice.
Factor out those, and you still have plenty of black-on-black violence. (Yes, that's what you mean and we all know it.) Are we to have no compassion for these people's families and loved ones? Are these dead people not human, nor deserving of a better lot in life and more to live for than drugs or status among their immediate peers?
The brightest and most well-meaning people in the black community itself have not been able to solve black-on-black violence and we're not going to solve it here. But to dismiss this category of dead people as roadkill is not doing a service to whatever point you are trying to make.