You're saying that black people have a higher propensity for crime. Is it not more plausible that humans are more or less alike, and the difference is outside their control?
Black people aren't predisposed to commit crimes more often than anyone else. It is just that a higher percentage of them grow up poor and/or with just a single parent, which are factors in likelihood to commit crimes, which leads to higher incarceration rates, which just feeds the beginning factors. When you control for economic status and parents, white people have similar rates. The factors that make it more likely for an individual to commit a crime are outside of their control yes, but committing a crime or not is always an individual's decision that can't be blamed on anyone else.
When you saids "It is just that .." , did you really mean those are the only causes of the higher black crime rate? If not, what do you think the other major causes are?
I heard someone say a long time ago something along the lines that the frontal lobe develops differently between ethnic groups and that it controls your empathy and impulse reactions. I haven’t seen any research that supports this though (and did nit search for that). It would be interesting to see if this claim is supported by science.