This episode's headline: Naked City; Finally - A Time for Healing. The guests include JACK KEMP, Secretary of Housing & Urban Development; SANDRA FREEDMAN, Mayor, Tampa; FRANK JORDAN, Mayor, San Francisco; P.J. MORGAN, Mayor, Omaha; MAYNARD JACKSON, Mayor, Atlanta; PAUL SOGLIN, Mayor, Madison; CORRESPONDENT: JEFFREY KAYE. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER