My friend thinks rappers are good people?

Ok, my friend thinks rappers like Lil Wayne, Niki, etc. Are good rappers. By good I mean that she thinks that these rappers are good people. Like people who don't smoke, cuss, or strip. The exact opposite of who those people are. She goes on and on about how good they are, even though I completely disagree with it. I'm worried she will become one of them some day because they are actually inspiring her! I try to tell her that we are so much classier than those people; and try to act cool. But it never works. What do I do to make her stop looking up to these people?