“Black deaths matter only if the killer is a white cop,” said Italian journalist Enza Ferrerri.

Which doesn’t happen very often. Of 1,265 murder victims in St. Louis between 2003 and 2012, 1,138 (89.9 percent) were black, according to University of Missouri-St. Louis criminologist David Klinger, a former police officer.

About 90 percent of the black decedents (1,025) were slain by other blacks, his research indicates. Thirty-two were killed by police officers, 22 (1.93 percent) by white cops…

Blacks also are more likely than whites, Hispanics or Asians to resist arrest, according to Heather McDonald of the Manhattan Institute.

Black cops have shot black suspects at essentially the same rate as white cops have, Prof. Klinger’s data indicate.