[manwiththehands]

Liberal Racism 101: These white girls are being criticized because they should know better. Blacks can't be expected to know better, thus they are not criticized.

[durasell]

Black rappers are denounced fairly regularly, most famously by Stanley Crouch (a jazz head). But mostly the market is taking care of the hateful rap lyrics. The music industry is discovering (yet again) people listen to music to have a good time, not for a political agenda.