"On the night of Aug. 4, the Pentagon proclaimed that a second attack by North Vietnamese PT boats had occurred earlier that day in the Tonkin Gulf — a report cited by President Johnson as he went on national TV that evening to announce a momentous escalation in the war: air strikes against North Vietnam.
But Johnson ordered U.S. bombers to "retaliate" for a North Vietnamese torpedo attack that never happened.
...
"But Johnson's deceitful speech of Aug. 4, 1964, won accolades from editorial writers. The president, proclaimed the New York Times, "went to the American people last night with the somber facts." The Los Angeles Times urged Americans to "face the fact that the Communists, by their attack on American vessels in international waters, have themselves escalated the hostilities."
http://www.fair.org/index.php?page=226130-year Anniversary: Tonkin Gulf Lie Launched Vietnam War