CDC and the FBI Census Bureau. 
Police killings of blacks down 70 percent in last 50 years
In 2012, 123 blacks were killed by police with a gun
In 2012, 326 whites were killed with a gun

In 2013, blacks committed 5,375 murders
In 2013, whites committed 4,396 murders
Whites are  77.7% of the population blacks are 13 percent

“Anyone, anyone, thinking clearly can see that the homicide rate among blacks is way out of proportion, thus the police intrusion into black precincts, since, in a whopping 90 percent of black homicides, the dead person is another black, or the offender himself.”