Colour revolutions: During protests over irregularities in the Yugoslavian general election, a wheel-loader was driven into the Radio Television of Serbia building, giving the protests the nickname "Bulldozer Revolution".
Two trains collided head-on in Ladbroke Grove, London, killing 31 people, injuring 417, and severely damaging public confidence in the management and regulation of safety of Britain's privatised railway system.
Eugene Hasenfus's plane was shot down by Nicaraguan forces while carrying weapons to the Contra rebels on behalf of the U.S. government; he was subsequently captured, leading to an international controversy.
The U.S. suspended the Commercial Import Program, its main economic support for South Vietnam, in response to the oppression of Buddhists by President Ngô Đình Diệm (pictured).