A series of Soviet active measures focused on exacerbating racial divisions in the United States. According to intelligence historian Christopher Andrew, "Martin Luther King was probably the only prominent American to be the target of active measures by both the FBI and the KGB." The FBI surveilled King and also tried to publicize adultery accusations against him, while posing as a former supporter. Meanwhile, the KGB tried but failed to influence MLK, Jr. through the CPUSA. Finding King not radical enough, the KGB sought to discredit him by portraying him as a supposed "Uncle Tom". After King's assassination, the KGB spread conspiracy theories about the government being involved in his murder. Following this, Yuri Andropov approved the forgery of anti-black pamphlets claiming to be from the Jewish Defense League. A more extensive sabotage plot was planned as "Operation PANDORA" but never implemented. The KGB later penned racist letters to appear as a Ku Klux Klan campaign against Olympic athletes from African and Asian countries to scare them from participating, ahead of the Soviets' 1984 Summer Olympics boycott.