But there’s a huge problem with attempt to shift the conversation: There’s no such thing as “black-on-black” crime. Yes, from 1976 to 2005, 94 percent of black victims were killed by black offenders, but that racial exclusivity was also true for white victims of violent crime—86 percent were killed by white offenders. Indeed, for the large majority of crimes, you’ll find that victims and offenders share a racial identity, or have some prior relationship to each other.What Shapiro and others miss about crime, in general, is that it’s driven by opportunism and proximity; If African-Americans are more likely to be robbed, or injured, or killed by other African-Americans, it’s because they tend to live in the same neighborhoods as each other. Residential statistics bear this out (PDF); blacks are still more likely to live near each other or other minority groups than they are to whites. And of course, the reverse holds as well—whites are much more likely to live near other whites than they are to minorities and African-Americans in particular.

Source: The Trayvon Martin Killing and the Myth of Black-on-Black Crime – The Daily Beast