Here's an interview with a guy called Keanu Reeves where he makes an unmistakably clear distinction between him and his the role he's playing. He doesn't try to suggest to the audience that he's "really like that" off camera. It's clear to us that he's an actor.
People know most of these rappers are not king von out catching bodies, and even he wasn't catching bodies when he started rapping. If they wanted to be in the streets for real they wouldn't be rapping. You think black people are stupid and can't make the distinction between entertainment and real life.