This episode's headline: Protest for Change; Hostages. The guests include In New York: ANDREW NATHAN, Columbia University; MOHAMMAD MEHDI, American-Arab Relations Committee; In Detroit: MICHAEL OKSENBERG, University of Michigan; In Washington: JEREMY LEVIN, Former Hostage; CHARLES KRAUTHAMMER, .MDUL/New Republic .MDNM/; In San Francisco: Rev. BENJAMIN WEIR LD./Former Hostage: REPORTS FROM NEWSHOUR CORRESPONDENTS: MIKE O'DRISCOL (Visnews), in Israel; PETER GOULD (BBC), in China; CHARLES KRAUSE; MICHAEL TOBIAS (KQED). Byline: Destined for Greatness; In New York: ROBERT MacNEIL, Executive Editor; In Washington: JIM LEHRER, Associate Editor