This episode's headline: Arkansas Shooting; Sexual Harassment. ANCHOR: JIM LEHRER; GUESTS: OLARA OTUNNU, International Peace Academy; ALISON DES FORGES, Human Rights Watch/Africa; MAC ARTHUR DE SHAZER, Former National Security Council Staff; FOCUS - SEXUAL HARASSMENT: STUART TAYLOR, National Journal; CORRESPONDENT: ELIZABETH FARNSWORTH, FOCUS - SEXUAL HARASSMENT; DEBRA RASKIN, Sexual Harassment Lawyer; JEFFREY ROSEN, George Washington University Law School; VICKI SCHULTZ, Yale University Law School; CORRESPONDENTS: KWAME HOLMAN; MARGARET WARNER; ELIZABETH FARNSWORTH; CHARLES KRAUSE