of duis, driving under the influence. it could be one of those things. criminals have guns. if you want to ban guns from good people, criminals are still going to get them. they're going to smuggle them through into this country and still going to have them. you can create laws that will ban guns, bad people are still going to get them. you can create laws that are going to ban drugs. bad people still get them. so i think we have to talk about the bigger issues why are people committing these crimes i go back to the fact of mental health and substance abuse issues needs to be talked about and addressed. >> okay. sheriff knocker, thank you very much indeed for joining me. >> thank you. >> so what makes a 71-year-old open fire in a movie theater or a 12-year-old boy fire a gun at his classmates? is it a mental health issues parenting or gun control problems? joining me now is lisa bloom, best-selling author of "swagger, ten rules for raising boys in the age of -- thug culture. >> i listen to that sheriff with a great sense of dismay, not of