How ‘black on black crime’ became a conservative talking point

Black Lives Matters has focused the nation’s attention on violence against black people, particularly by police officers. Some have pushed back, saying the real violence against African Americans is by other African Americans – so-called “black on black crime.” Critics of the phrase, like NPR’s Gene Demby, say people use black crime rates to derail any conversation about police violence. When did the phrase become a conservative talking point?