There will always be inequalities, there will always be unhappiness/unrest, there will always be crime to some degree, and thus there will always be the need of some responsibility to deal with it. The important thing is that this group is selected and actively monitored according to strict requirements. The current situation is bad, especially in the US, something needs to change. But saying we don't need cops is just as stupid as the right-winger's "I don't dial 911 🔫🔫" door sign...