You can take some time to point out that role models are not perfect, and that it is possible for a good person to not always be good. You could even argue that some of the best role models are people who were first "bad" role models who have learned a lesson or gone through the difficult job of becoming better. You can also choose to discuss the fact that you can have a "bad" role model or someone who you look up to, but that they aren't demonstrating good behavior (or could be encouraging you to do things that aren't good for your future).