The feral criminal element of the black population needs to be consistently confronted and terminated with extreme prejudice. Forget prison.
This will not happen until the honest and decent element of the 'black' population gets over its pathological fear of firearms, quits voting for gun-banning tyrants, tells its gun-ban-supporting pacifist clergy to pound sand, and learns to exercise its right to keep and bear arms. The people most advantageously placed to terminate criminals with extreme prejudice are the criminals' intended victims. Most 'black' criminals target 'black' victims.
QED.