A feeling of safety comes from within. Establishing a brutal traumatizing system that isn't oriented toward healing doesn't create a culture of safety, but of emotional codependence on violence.
"A feeling of safety comes from within." --- This is an actively counterproductive statement. Just look at the impetus behind "defund the police": the real police violence causes people of color to feel unsafe. On the flipside, crime often involves real violence that makes people feel unsafe. You can argue that policing isn't the answer to crime, but real danger is the root of feeling unsafe, even if (like everything) it is mediated by perception. A "culture of safety" must be rooted in a reality of safety.