It would take criminals in the United States and Canada many hundreds of centuries to kill the number of disarmed civilians that Adolf Hitler, Joseph Stalin, Mao, and Pol Pot killed in just only one.
Before criminals in the US got very far along in that, regular citizen would deal with the issue, if the cops weren’t. The only reason there isn’t more outcry than there is, is because the gangbangers are in significant percentages mostly killing each other. The collateral damage stinks, but that’s the reality.