Hand waving away racial influences is convenient to some, but definitely not to those affected by it. If you look into the statistics, you'll see that primarily minority communities were targeted by the "tough on crime" era. And these touted "tough on crime" policies only had the effect of enslaving and crippling generations of minority communities.
The crime rates are nearly similar among all races, and it's actually been shown that whites use more drugs than minorities. The thing is though, police don't patrol white communities. They also let white people off the hook. If you're not white though, the tradition is "one strike" (see Bill Clinton's damning policy). Hence, you get in trouble for something any kid might do at 16, and you get locked into a system of control and degradation for the rest of your life.
Please, please, please, do not defend the dark parts of American history. Especially when they're still going on.