That would most certainly help, but it is a long ways from solving the causes of violence in the neighborhood.   Why does it take the killing of mixed races to get the  attention of the public?    

I knew a ex drug addict many years ago.   He said with some pride, "If I saw a junkie overdose, I would call 911 or get help"   He said most junkie see one of their own fall they leave quickly.    He added, the police really didn't care, it was just one less junkie thay had to deal with.
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Seems our 'oh well' attitude in white communities to black on black shootings often has this same tone.   "It's their problem, they should take care of it".    

So what's learned by the children?  Justice  is found with a gun in their neighborhood.    The police aren't there to help, you have to do it yourself.   

Now we have a sub-culture where violence is accepted as power and justice is what you make of it.

It's the NRA's fear mongering promo  played out in real life.