We can't ignore progress made with police violence

In the wake of horrible killings like that of George Floyd, activists and academics decry police violence against black males. For my fellow social scientists and others on the left, it is an article of faith that in Trump's America, police have declared war on African-Americans.

On the right, conservatives and Trump backers generally reject any criticism of police.

Virtue signaling from the left and right is emotionally and politically rewarding. For professors it can even get you a grant. Yet political posturing ignores facts, and does nothing to make things better.

If we want to stop yelling at each other and improve policing, here are four things to consider:

First, we know less than we think. As Franklin Zimring writes in "When Police Kill," police use of lethal force takes more than 10 times as many lives as legal executions. Yet while considerable scholarship studies the death penalty, there is "an almost complete lack of recent ... research on police killings and ... policy analysis about how different rules might influence the level of violence by police."

This represents a horrendous failing — on the part of police, but also on the part of my fellow professors, who are too busy chasing grants, tenure and politically correct fantasies to solve actual social problems.

Until recently, we could not even estimate how many civilians were killed by cops. As then-FBI Director James Comey complained after civil unrest in Ferguson, Mo., his agency had no idea whether police in Ferguson "shot one person a week, one a year, or one a century."

Along with frequent traffic stops, that legacy of past racist violence leads many African-Americans to distrust today's police. We have no easy way to fix that, but pretending nothing has changed is certainly not helpful.

Third, on the bright side, police killings of civilians are now very rare, what Zimring calls "a needle-in-the-haystack phenomenon among the hundreds of millions of contacts between police and citizens." As Domonic Bearfield, Patrick Wolf and I document in "Can Police Professionalism Make Black Lives Matter More?" only one in 669 police officers killed someone on duty in 2015. Given that police encounter danger — an estimated 90% of those killed by cops were armed — remarkably few cops are killers.

Further, most of those killed by cops are non-Hispanic whites, though evidence does find African-Americans overrepresented among the very small number of unarmed citizens killed by cops.

Fourth, and most importantly, we can do better. NYPD's highly professional 35,000 officers today kill about a dozen civilians annually, 90% fewer than in the 1970s. My co-authors and I find that, adjusted for population, NYPD kills far fewer civilians than any other major police force — while keeping crime at record lows, and despite a high poverty rate and reduced incarceration. Not that anyone noticed.

NYPD accomplished this over a period of decades by better recruitment and training of officers, and by holding precinct commanders accountable for basic professionalism — like not shooting civilians without cause. NYPD precinct commanders who persistently fail get fired, a practice unheard of elsewhere due to cumbersome civil service rules.