Are Reggae Protests Hiding Racist Undertones?

Several prominent reggae artists have recently faced widespread protest and condemnation for their antigay lyrics, and some have even found themselves disinvited from events and awards shows. But many of the same groups that have been so furious in their condemnation of the exclusively black reggae singers seem to take a wholly different tone when dealing with the viciously homophobic (but blond/blue-eyed) rapper Eminem. Could there be a twinge of racism behind all the protest?