Heather MacDonald recounts for National Review Online the recent history of inflammatory rhetoric in politics.

Commentators on MSNBC and CNN have been shedding crocodile tears over Donald Trump’s “divisive rhetoric” and lamenting his failure to unify the country. This sudden concern for national unity is rather hard to take from the same worthies who have incessantly glorified the Black Lives Matter movement over the last year and a half.

Let’s dip into the rhetoric of a garden-variety Black Lives Matter march that I observed last November on Fifth Avenue in New York City. It featured “F**k the Police,” “Murderer Cops,” and “Racism Is the Disease, Revolution Is the Cure” T-shirts, “Stop Police Terror” signs, and “Hey Hey, Ho Ho, Racist Cops Have Got to Go” chants. …

… How about presidential rhetoric? President Obama routinely claims that the police and the criminal-justice system treat blacks differently than whites — an allegation without any empirical support. Last October, he defended the Black Lives Matter movement on the ground that “there is a specific problem that is happening in the African-American community that is not happening in other communities.” And might that “specific problem” be drive-by shootings, which happen virtually exclusively in black communities, mowing down innocent children and drawing disproportionate police presence? Of course not. Obama was referring to the alleged problem of racist cops’ mowing down black men. In fact, a police officer is two and a half times more likely to be killed by a black man than a black man is to be killed by a police officer. …

… The rhetoric of Democratic presidential contenders is just as incendiary. Hillary Clinton says it’s a “reality” that cops see black lives as “cheap.” Bernie Sanders says the killing of unarmed black people by police officers has been going on “decade after decade after decade.” In fact, among the 36 “unarmed” black men killed by the police last year (compared with 31 unarmed white men), a large percentage had been trying to grab the officer’s gun, were pummeling the officer with his own equipment, or were otherwise so viciously fighting with the arresting officer as to legitimately put him in fear for his life.

Black Lives Matter ideology, eagerly embraced by media and political elites, has created a volatile, dangerous atmosphere in urban areas when officers make an arrest.