Going to take a stab at sonething without any stats to back me up, but the 13% accounting for over 50% is much worse than that even appears.
My guess is that most of the perps and victims are black men which I believe make up around 6% of the population.
So the stat should read more like 6% of the population make up 50% of perps and victims, and of that 6% would guess the actual number of perps is closer to 1% with multiple crimes on their resumes
Going further out on the limb would also guess that murder stats are fudged to make them appear better than they are along with a judicial and political system that allows these repeat offenders to kill again
Nice deconstruction.
Then, after you narrow it down to black males - take it one step further - black males within a certain age groups, with no functional father present in the home.