Not all issues are equal. Porn, in particular, has a lot of history of abuse of its participants and objectification of a large class of people. Rap music is a

Not all issues are equal. Porn, in particular, has a lot of history of abuse of its participants and objectification of a large class of people. Rap music is a genre. If you said "rap music that talks about running around murdering police officers", despite the fact that no police officers were murdered in the making of that song, it would probably also be offensive.