Contrary to the popular narrative that government police establish law and order, there is good reason to believe that the advent of militarized police in the 1800s led to an escalation of riots and political corruption while offering little law or order.
Americans have been buying lots of guns out of fear of crime and unrest this year. This suggests that the crime-guns causality is the opposite of what gun controllers say. Rather than saying "guns cause crime," we should be saying "crime causes guns."
The Left believes that we need the state to force people to act in line with "social justice." This means that somebody must force compliance with state edicts, even if those people aren't called "police."