This episode's headline: Civil Rights & Wrongs?; The Nixon Years; Song of Spirit. The guests include SEN. ALAN SIMPSON, [R] Wyoming; SEN. CHRISTOPHER DODD, [D] Connecticut; ALEC BRINDLE, Businessman; ELAINE JONES, Civil Rights Lawyer; CORRESPONDENTS: KWAME HOLMAN; CLARENCE PAGE; CHARLAYNE HUNTER-GAULT. Byline: In New York: ROBERT MacNeil; In Washington: JAMES LEHRER