Both of these authors are famous educators, researchers, and hard-nosed activists in the field of preventing youth violence, with a proven track record of great success in the field, and national visibility in major broadcast and print media, including frequent appearances on "Good Morning America," "Nightline," the "PBS News Hour," "ABC News," the "New York Times," "The" "Boston Globe," and elsewhere. Deborah Prothrow-Stith M.D. is Associate Dean for faculty development and Professor of public health practice at the Harvard University School of Public Health. Dr. Smith is also Commissioner fo...