With Hillary Clinton's comments about crime, policing, and race, the candidate helps push a false—and dangerous—narrative, Heather Mac Donald says in an op-ed piece in the City Journal  about the first presidential debate between Clinton and Trump Monday:

Hillary Clinton repeated her incessant lie last night that the criminal justice system is infected with "systemic racism." Race "determines" how people are "treated in the criminal justice system," she said. Blacks are "more likely [than whites] to be arrested, charged, convicted and incarcerated" for "doing the same thing." Such a dangerous falsehood, should Clinton act on it as president, would result not just in misguided policies but in the continued delegitimation of the criminal justice system. That delegitimation, with its attendant hostility and aggression toward police officers, has already produced the  largest one-year surge in homicides  in urban areas in nearly a half-century.

Criminologists have tried for decades to prove that the overrepresentation of blacks in prison is due to criminal-justice racism. They have always come up short. They have been forced to the same conclusion as Michael Tonry in his book, Malign Neglect: "Racial differences in patterns of offending, not racial bias by police and other officials, are the principal reason that such greater proportions of blacks than whites are arrested, prosecuted, convicted and imprisoned," Tonry wrote.

Clinton reiterated her call for "implicit-bias" training for officers. The premise of such training is that police officers are shooting black males out of such bias. Yet, four studies have come out this year alone that demolish this charge. They show that if there is bias among police officers in their shooting decisions, it works in favor of blacks and against whites. "Implicit-bias" training, based on a lie, is a grotesque waste of resources at a time when officers are desperate for more hands-on tactical training that will help them make those crucial shoot/don’t shoot decisions in the field, or avoid being put into such an excruciating situation in the first place.

The current mendacious narrative about policing and race has to change or we can expect to see further violent-crime increases and further racial violence. It is clear, however, that Hillary Clinton will continue to enflame racial tensions through a set of lies about the criminal-justice system.

Read the entire piece at the City Journal .