June 23rd

2016
United Kingdom votes to leave the European Union in their "Brexit" referundum.
United Kingdom European Union membership referendum, 2016 ...
2005
Former Ku Klux Klansman Edgar Ray Killen was sentenced to 60 years in prison for the 1964 Mississippi slayings of three civil rights workers.
Edgar Ray Killen
2003
The U.S. Supreme Court upheld the University of Michigan's School of Law affirmative action policy.
Grutter v. Bollinger
1995
Dr. Jonas Salk, the medical pioneer who developed the first polio vaccine, died.
Jonas Salk
1993
Lorena Bobbitt of Prince William County, Va., sexually mutilated her husband, John, after he allegedly raped her.
1992
Yitzhak Rabin's Labor Party wins the election in Israel. Rabin became the country's fifth Prime Minister. For his engagement in a peaceful solution to the Middle East conflict, he was awarded the Nobel Peace Prize in 1994 (together with Shimon Peres and Yasir Arafat). A year later, Rabin was assassinated by a Jewish extremist.
Israeli legislative election, 1992
1985
An Air India jumbo jet crashes into the Atlantic Ocean. The crash was caused by a bomb planted by the Sikh militant group Babbar Khalsa. The incident, in which all 329 people aboard died, was the first bombing of a Boeing 747.
Air India Flight 182
1974
1st extraterrestrial message sent from Earth into space.
Arecibo message
1972
Richard Nixon and H. R. Haldeman discussed ways to obstruct the FBI's Watergate investigation. Revelation of this conversation spurred on Nixon's 1974 resignation.
Watergate scandal
1969
Warren Burger was sworn in as Chief Justice of the U.S. Supreme Court.
Richard Nixon Supreme Court candidates
1961
The Antarctic Treaty comes into force. The treaty was the first arms control agreement signed during the Cold War. It sets Antarctica aside as a scientific preserve and prohibits military activities on the continent.
Antarctic Treaty System
1956
Gamal Abdel Nasser was elected president of Egypt.
Gamal Abdel Nasser
1947
The Senate joined the House in overriding President Harry S. Truman's veto of the Taft-Hartley Act, which allows the president to intervene in labor disputes.
Labor Management Relations Act of 1947
1931
Wiley Post and Harold Gatty start their record-breaking flight around the world. The American-Australian team was the first to circumnavigate the planet in a single-engine plane. After several stops, they returned to Roosevelt Field eight days later. They took nearly two weeks less than the previous record holder, the German airship Graf Zeppelin.
Wiley Post
1923
Choreographer-director Bob Fosse was born in Chicago.
Bob Fosse
1894
The International Olympic Committee (IOC) is founded. The IOC is responsible for organizing the Olympic Games and similar events. The committee was established at the initiative of French educator, Pierre de Coubertin.
International Olympic Committee
1892
The Democratic convention in Chicago nominated former President Grover Cleveland on the first ballot.
1892 Democratic National Convention
1868
Christopher Latham Sholes received a patent for an invention he called a ''Type-Writer.''.
Christopher Latham Sholes
930
World's oldest parliament, the Icelandic Parliament, the Alþingi (anglicised as Althing or Althingi), established.