4th » Iran-Contra Affair: Former White House aide Oliver North is convicted of three crimes and acquitted of nine other charges. The convictions, however, are later overturned on appeal.
6th » Cedar Point opens Magnum XL-200, the first roller coaster to break the 200 ft height barrier, therefore spawning what is known as the "coaster wars".
12th » The San Bernardino train disaster kills four people. A week later an underground gasoline pipeline explodes killing two more people.
13th » Large groups of students Tiananmen Square protests of 1989 known as occupy Tiananmen Square and begin a hunger strike.
20th » The Chinese authorities declare martial law in the face of pro-democracy demonstrations, setting the scene for the Tiananmen Square massacre.
29th » Signing of an agreement between Egypt and the United States, allowing the manufacture of parts of the General Dynamics F-16 Fighting Falcon named F-16 jet fighter plane in Egypt.
30th » Tiananmen Square protests of 1989: the 33-foot high "Goddess of Democracy" statue is unveiled in Tiananmen Square by student demonstrators.
31st » A group of six members of the guerrilla group Túpac Amaru Revolutionary Movement (MRTA) of Peru, shoot dead eight transsexualism named transsexuals, in the city of Tarapoto.