At this point it’s very clear that hip-hop runs the world—when “the man” wants in on the action you know you’ve made it—but it’s easy to forget in these days of casual appropriation that rap has always been a very unique form of music. The rebel stepchild of pop does its own thing in its own way. Even if we can’t agree about what’s good or bad about it anymore there are definitely things we take for granted about its distinct culture. And let’s be real, it’s a blessing that there are things Taylor Swift and Katy Perry can’t/won’t/don’t do.