I suspect, due to socio-economic, etc factors, black men might commit more crimes. I don't think white men commit crimes less than black men to the a degree that would account for the disparity because the disparity is extreme and there is no shortage of white men in poor socio-economic circumstances.
Murder and nonnegligent manslaughter arrests: white (4,000); black (4,149)
Forcible Rape arrests: white (9,504); black (4,811)
Robbery arrests: white (35,443); black (45,827)
Aggravated Assault arrests: white (194,981); black (102,597)
Blacks are 13.1% of the US population (2012); Whites are 63% of the population (excludes hispanics).