> African Americans commit a disproportionately large amount of violent crimes. It seems reasonable to expect that they also commit a larger amount of misdemeanors and minor infractions.

There is no obvious causal reason to link violent offenses and non-violent offenses. In fact, in my experience, I would expect an inverse causal relationship. I know quite a few ... people ... who would pick your pocket, steal from your house, etc. but would never actually physically assault somebody.

Your statement might be true, but some data is required.