[stepherm]

Why does "Urban" necessarily imply "poor minority"? In most urban areas there are plenty of people that are not "poor minorities".

[calambrac]

It doesn't 'necessarily' imply that, but it is a widely-used euphemism for inner city hip-hop culture. Acting like it's not, that the term arises from the name of the slang dictionary (and not the other way around), is just wrong.