In 1999 , freelance historian Ben Green alleged that Kennedy falsified or misrepresented portions of '' The Klan Unmasked '' . During the 1990s , Green had enlisted Kennedy 's help while researching a book about the still unsolved murders of Florida couple Harry and Harriette Moore , black Civil Rights activists who died of injuries from the bombing of their home on Christmas Eve 1951 . Green 's book about the Moores , '' Before His Time '' , was published in 1999 . Green , whose book is generally disparaging of Kennedy , claimed to have examined Kennedy 's archives at the Schomburg Center for Research in Black Culture in Harlem and Atlanta and he concluded that a number of interviews , portrayed in '' I Rode With The Ku Klux Klan '' as having been conducted undercover , had in fact been done openly , and that racist material amassed by Kennedy had also been openly obtained from mail subscriptions to the Klan and similar groups and not surreptitiously , as Kennedy implied . Most seriously , Green accused Kennedy of concealing the existence of a collaborator , referred to as " John Brown " ( a pseudonym presumably chosen in honor of the 19th-century abolitionist John Brown ) . This pseudonymous collaborator , Green alleged , was in fact responsible for the most daring of Kennedy 's undercover revelations
Harry and Harriette Moore
Murder of Harry and Harriette Moore
Stetson Kennedy