Is the gospel no longer enough for black Christians?

Darrell B. Harrison asks the question, "Is the gospel no longer enough for black Christians?":

I believe this question to be germane to the current milieu in America, as many black Christians have begun to advocate a purely activist theology borne of a soteriology that proffers the idea that the preeminent, if not sole, mandate of the gospel is the pursuit of “social justice”, the manifestation of which is evidenced primarily by the bringing about of such realities as socio-ethno egalitarianism and the eradication of all human suffering and oppression, particularly of those whose melanin happens to be of a black or brown hue.

You can (and should) read the rest here, and ask yourself: Is the gospel no longer enough for me?