This has become the new "P.C." word for black; why it is any better is beyond me; but, let's face it, that's what the authors means, why else would radio listings show rap-music stations as "urban?"
Why doesn't the NAACP complain about this?
I guess it's the place of the NAAUA (National Association for the Advancement of Urban Americans) to complain.
But maybe they're too busy with Urban American Owned Business Councils, Urban American Teachers Unions and Urban American Congressional Caucuses.