Amid the rioting in Milwaukee, there is also a clash between two leading lawmen there -- Milwaukee County Sheriff David Clarke and the city of Milwaukee's Chief of Police Edward Flynn. They have very different opinions about how law enforcement should be carried out.
Chief Edward Flynn expresses the view long prevalent among those who emphasize the social "root causes" of crime, such as income disparities and educational disparities, as well as the larger society's neglect of black communities.
Chief Flynn puts less emphasis on aggressive police action and more on community outreach and gun control.
Sheriff David Clarke represents an opposite tradition, in which the job of the police is to enforce the law, as forcefully as necessary, not to make excuses for law-breaking or to ease up on enforcing the law, in hopes that this will mollify rioters. Sheriff Clarke would also like to see law-abiding blacks be armed.
Differences of opinion on law enforcement are sharp and unmistakable -- and have been for more than 50 years. However, as the late Daniel Patrick Moynihan used to say, "You're entitled to your own opinion, but you're not entitled to your own facts."
Unfortunately, facts seem to play a remarkably small role in clashes over law enforcement policies. And that too has been true for more than 50 years.
In his memoirs, the Supreme Court's Chief Justice Earl Warren declared that "all of us must assume a share of the responsibility" for rising crime rates in the 1960s because "for decades we have swept under the rug" the slum conditions that breed crime.
But the hard fact is that the murder rate in the country as a whole was going down during those very decades when social problems in the slums were supposedly being neglected.