There are definitely rappers out there who have killed people. You're a fool if you believe otherwise. I would say most who say they have have not, but some are telling the truth, especially the ones who have not blown up, are still living in the hood, and are talking about it. Shit, two of the three members of SF rap group RBL Posse have been murdered, so it seems reasonable to assume that they werel living that lifestyle or at least used to live it. And about getting caught up, you can't get put in jail just for saying you killed somebody, a rapper would have to give a name or something to get charged with anything, so they can still say they killed people in all honesty and not get arrested.