Dealing with violent crime constitutes only a small minority of what police deal with on a daily basis. For example, in 2014, out of 11,205,833 arrests made nationwide (in the US), 498,666 arrests were for violent crimes and 1,553,980 arrests were for property crime. That means 82 percent of arrests were made for something other than violent crime or property crime [my emphasis]I wonder what those numbers are in the UK? Most of us think of "real crime" as involving violence, theft, fraud or at least property damage. On reflection however, perhaps it's not surprising that 82% of police activity in the US relates to other matters. For all the fairy dust it blows in our eyes, the state is just another organisation shaped from the crooked timber of mankind. The people working for it – including police officers – have their own agenda, just like the rest of us. Unlike us however they face no competitive pressures to subordinate it to that of their customers.
Contrary to un-serious and absurd claims that the police "enforce all laws," police use their discretion all the time as to what laws to enforce and which to not enforce. Those laws that are enforced are often laws that can lead to profit for the police department — such as drug laws which lead to asset forfeiture — or laws that can make for easy arrests — such as loitering and other small time laws — which improve a police officers' arrest record.
If we want to be serious about scaling back the degree to which police interactions with the public can lead to violent escalations, we must first scale back the number of offenses that can lead to serious fines and imprisonment for members of the public, while shifting the concentration of police efforts to violent crime and property crime. The emphasis must return to crimes that have actual victims and which are reported by citizens looking for stolen property and violent criminals. Not only will this increase the value of policing, but will also improve relations with most of the public while reducing the footprint of the state in the lives of ordinary people.