Consider this:
The FBI’s Supplementary Homicide Reports and Centers for Disease Control reported that an average of 4,472 black men were killed by other black men annually between Jan. 1, 2009, and Dec. 31, 2012.
One black man killed by police every three days, 37 killed by other black men in the same period.
Here are some numbers I have, which closely correspond to yours. You will like the other numbers I have:
Of the 56,259 homicides from 2009-2012, 19,000 (33.8%) were killings of black males.
Comparisons by types of homicides of black males:
481 (2.5%) were the result of police use of force.
152 (0.8%) were the result of a negligent accident homicides (i.e., child playing with a gun).
648 (3.4%) were the result of a justifiable homicides by private citizens acting in self-defense.
17,719 (93.3%) were criminal homicides (murders)
89.6% (.896 x 17,719 = 15,876) of black males killed in criminal homicides from 2009-2012 were killed by another black male.
As there are approximately 20,864,500 black males in the U.S., here are annual percentages:
0.020% (4173) of all black males died in a criminal homicide last year.
0.012% (2503) of all black males committed suicide last year
0.011% (2295) of all black males died in a vehicle crash last year
0.00078% (163) of all black males died by a private citizen acting in self-defense
0.00078% (163) of all black males died from police use of force last year