Blacks commit violent crimes at 7 to 10 times the rate that whites do. The fact that their victims tend to be of the same race suggests that young black men in the ghetto live in danger of being shot by each other, not cops. Nor is this a function of “over-policing” certain neighborhoods to juice black arrest rates. Research has long shown that the rate at which blacks are arrested is nearly identical to the rate at which crime victims identify blacks as their assailants. The police are in these communities because that’s where the emergency calls originate, and they spend much of their time trying to stop residents of the same race from harming one another.

Former New York Mayor Rudy Giuliani pointed this out recently on “Meet the Press” in a debate with sociologist Michael Eric Dyson. “What about the poor black child that is killed by another black child? Why aren’t you protesting that?” Mr. Giuliani asked.

“Those people go to jail,” Mr. Dyson responded. “I do protest it. I’m a minister. They go to jail.”

Mr. Dyson might want to try protesting a little harder. Chicago had 507 murders in 2012, only 26% of which were solved. “To put it another way: About three-quarters of the people who killed someone in Chicago in 2012 have gotten away with murder—so far, at least,” Chicago Magazine noted. Mr. Dyson and others on the left are not oblivious to this black pathology, but they are at pains even to acknowledge it, let alone make it a focus. Instead, liberals spend their time spotlighting white racism, real or imagined, and touting it as an all-purpose explanation for bad black outcomes.