If I were the DPz, I wouldn't feel very UNcomfortable delivering my content to a show full of white people, as they often end up having to do. The sight of white kids throwing up a fist for the cause makes me cringe. Kind of like when I see girls dance to mysoginistic rap songs. Must be frustrating.

As far as I know, the DPz are activists (or whatever is the appropriate term) first and artists second, whereas the Roots, Mos Def, Kweli, while they may reveal their political views in their work, are concerned primarily with creating art.