BLACK COMMUNITY: A DEFINITION

"Black Community": A nominal aggregation of persons, principally of African descent, without borders, constitution, or economy, to which a defined cultural and geopolitical identity is attributed; and, to which an imputed quasi-"sovereignty" is often blithely ascribed by others, including many black persons, themselves, as though it were true.

Is this definition valid in 2013? Or valid in prior years in The U.S.A.?