But now an unsettling asterisk must be added to the legacy of Ernest C. Withers, one of the most celebrated photographers of the civil rights era: He was a paid F.B.I. informer.
On Sunday, The Commercial Appeal in Memphis published the results of a two-year investigation that showed Mr. Withers, who died in 2007 at age 85, had collaborated closely with two F.B.I. agents in the 1960s to keep tabs on the civil rights movement. It was an astonishing revelation about a former police officer nicknamed the Original Civil Rights Photographer, whose previous claim to fame had been the trust he engendered among high-ranking civil rights leaders, including Dr. King.