This episode's headline: Indians. The guests include SAM DELORIA, American Indian Law Center; KEN SMITH, Assistant Secretary for Indian Affairs. Byline: In New York: CHARLAYNE HUNTER-GAULT, Correspondent; In Washington: JIM LEHRER, Associate Editor; JOE QUINLAN, Producer; NANCY NICHOLS, Reporter; Video Segment: MARK BENJAMIN, Producer/Cameraman; ALVIN KRINSKY, Video; DAVID ROTH, Production Assistant; JUAN BARNETT, Tape Editor