On May 19, 1972, the Weather Underground terrorist group planted a bomb in a women’s lavatory in the Air Force wing of the Pentagon to mark the 82nd anniversary of the birth of Vienamese communist leader Ho Chi Minh. The act was in retaliation for the aerial bombardment of Hanoi during the Vietnam War. The Weather Underground also bombed the U.S. Capitol on March 1, 1971. There were no serious inuries in either crime.