Theodore Beckles, a 19-year-old student at Independence High School, was fatally stabbed in September in a fight with a student from the High School for Environmental Studies, which shares the same building as Mr. Beckles's school on West 56th Street.
Mr. Kopel is research director of the Independence Institute and co-author of the law school textbook, "Firearms Law and the Second Amendment" (Aspen, 2012).