You always have to walk a fine line when presenting statistics like that though, because racist people will completely ignore the poverty aspect and just see "black people commit crime at a disproportionate rate to white people," and use it to justify their racism when in reality the color of one's skin is far less of an indicator of potential criminal behavior than socioeconomic status. And speaking of misrepresenting statistics, even though black people are disproportionately represented in committing crimes, the vast majority of crimes are still committed by white people, because white people make up a greater percentage of the population. We generally tend to tread on eggshells when we're discussing anything that might be perceived as a negative racial stereotype because we're terrified of being labeled racist, so it makes these conversations difficult to have; everyone is so busy trying to code their words to minimize offense that they end up skirting the issue.
The ironic part about AT P&N, is that because it is relatively hands-off as far as moderation, you can actually at least broach taboo subjects such as that.
On the other hand, it is only a matter of time before a Stormfronter or Rev. Wright Jr. bring it down to a pure racial level.