Natural incentives are beautiful because they work. In time the black community would change from being out of control teenagers to being adults who understand 'the rules' aren't there because their mean parents 'don't understand' but because they work.
In a fairly short period of time black residents would recreate healthy police departments - and NOT be rebelling against them.
Nothing like paying your own bills to see why the rules exist...
“...In time the black community would change ...”
Any community would.