Statistically, poor people are most likely to be violent. Statistically, black people are a lot more likely to be poor than white people.
Hows about them statistics?
Except that doesn't explain the phenomenon of black crime. Hispanics are a larger minority group than blacks and have a similar percentage of their population living below the poverty line, and are actually more likely to drop out of high school and not graduate college than blacks, yet they commit a fraction of the violent crime that blacks commit.
What source are you using for that claim?
The next excuse thrown out would be "racism", yet blacks were not as violent 50 years ago when there was much more racism against them to deal with.
Crime is a byproduct of freedom. There was less freedom for them 50 years ago than there is now.