God good, here we go. And I'm sure the folks who listen to country music would all be cool, calm, and collected. Guess you've never been to a Hank williams Jr. concert...
Let us be completely blunt here. If you want to find the worst part of just about any city, your best bet is that it will be clustered around a street named after Martin Luther King. That is just a plain, ugly fact.
Is it a genetic problem? Not on your life. But it is a cultural sickness that is most concentrated in the inner city. And the choice of music -- not to mention the exemplary lifestyles practiced by rap "artists" -- is a symptom of the sickness.