You go to a Cash Money show in Texas, it's mostly black and mexicans. You got a Common show, white folks run things.
My boy who worked at circuit city told me that most white and black folks bought what was popular. Since there were more white folks in the mix, they tended to out buy blacks and mexicans in every rap category.
But if you want to mistakenly believe that suburban and urban minorities are all supporting Common and the Roots, go on witcha bad self