Presidency of John F. Kennedy killed Oswald due to his own grief over Kennedy's death, but the assassination of Kennedy and the death of Oswald gave rise to enormous speculation that Kennedy had been the victim of a conspiracy. Kennedy was succeeded as president by Lyndon Johnson, who stated on November 27 that "no memorial or oration or eulogy could more eloquently honor President Kennedy's memory than the earliest possible passage of a civil rights bill for which he fought so long." President Johnson created the Warren Commission—chaired by Chief Justice Earl Warren—to investigate the assassination. The Warren Commission concluded that Oswald acted alone in
National Commission on the Disappearance of Persons National Commission on the Disappearance of Persons National Commission on the Disappearance of Persons (Spanish: , CONADEP) was an Argentine organization created by President Raúl Alfonsín on 15 December 1983, shortly after his inauguration, to investigate the fate of the "desaparecidos" (victims of forced disappearance) and other human rights violations (see: Dirty War) performed during the military dictatorship known as the National Reorganization Process between 1976 and 1983. The research of the investigation commission was documented in the "Nunca Más" (Never Again) report, which was a complete summary published as an official report in Spanish, and delivered to Alfonsín on