[261]

Surveillance of Martin Luther King
Johnson continued the FBI's wiretapping of Martin Luther King Jr. that had been previously authorized by the Kennedy administration under Attorney General Robert F. Kennedy.[262] As a result of listening to the FBI's tapes, remarks on King's extra-marital activities were made by several prominent officials, including Johnson, who once said that King was a "hypocritical preacher".[263] This was despite the fact that Johnson himself had multiple extramarital affairs.[41] Johnson also authorized the tapping of phone conversations of others, including the Vietnamese friends of a Nixon associate.[264]

International trips
Further information: List of international trips made by the President of the United States § Lyndon B. Johnson
Countries visited by Johnson during his presidency
Johnson made eleven international trips to twenty countries during his presidency.[265] He flew five hundred twenty-three thousand miles (841,690 km) aboard Air Force One while in office. His October 1966 visit to Australia sparked demonstrations from anti-war protesters.[266] One of the most unusual international trips in presidential history occurred before Christmas in 1967. 