"Experts cannot agree on what to call a recent rise in homicides, much less its cause, but new data on Friday that showed a sharp spike in homicide rates in more than 20 cities rekindled debate over hether it was time for alarm.
The data showed particularly significant increases in homicides in six cities in the first three months of the year compared with the same period last year — Chicago, Dallas, Jacksonville, Fla., Las Vegas, Los Angeles and Memphis. But almost as many cities reported a notable decline in recent months."
One potentially dysfunctional explanation has been provides by the Director of the FBI.
"The heroin epidemic, a resurgence in gang violence and economic factors in some cities were all offered as explanations, but the most contentious theory came from an agency that usually does not worry much about local crime: the Federal Bureau of Investigation.
What's wrong with the Director's theory? The Ferguson effect and BLM, etc. are nationwide phenomena. Yet homicide is down some places. There is no significant empirical evidence to back up the Director's theory. Finally, the theory plays into the hands of those who believe that aggressive policing and a excessive force are necessary to keep the poor and uppity minorities in check. White supremacists view the police as a tool to keep blacks under control. In this view excessive force is an effective crime-control strategy. However, there is not evidence to support that assertion.