If you had stopped after your second sentence, you'd be right on.
Do you believe that black men are genetically predisposed to shooting one another? I sure hope not.
So what causes it? Certainly not poverty - plenty of poor white people. Certainly not music - for years by far the largest consumers of what could be called gansta rap have been white teens and my guess is go to any shopping mall in middle America and you'll see evidence of just that.
Perhaps a stunning lack of resources in public schools? Perhaps a stunning number of single parents households? Perhaps a huge incarceration percentage amongst the male population? Look, there is real culpability in all of the above but working on what should be an accepted fact that that the black population isn't predisposed to shooting each other, there are very real environmental factors at play, and blaming the music (as many have done here) is the easy way out and frankly moronic.