having to go console fathers and mothers. >> well, first of all, serving was really the greatest honor of my life. it was a tough, tough, tough eight years. we rebuilt a great american city. but one of the issues that i still don't have a handle on, don't understand and won't accept is the number of deaths of young african-american men on the streets of america that nobody -- other than their parents and family members who want to spepd a lot of time. i think it's a fixable problem so it's something i wanted to know and understand. >> how is it a fixable problem. i come from chicago. tremendous issues there. >> i'm walking by faith here, not sight. this isn't rocket science. this is human beings hurting others mostly with guns. i wanted to explore the notion that violence is a public health threat that it transmitsist like a virus. it's a behavior yoral pattern that developing over time. not just because of personal