May 23rd

1998
The Good Friday Agreement is accepted in a referendum in Northern Ireland with 75% voting yes.
1997
Moderate Mohammad Khatami was elected president of Iran.
Mohammad Khatami
1992
The Italian mafia murder Giovanni Falcone. Falcone, a judge, was the mafia's most prominent adversary. After he, together with his wife and three bodyguards, fell victim to a car bomb, Falcone became a folk hero in Italy.
Giovanni Falcone
1969
The Who release Tommy. The British rock band's fourth album is considered the first musical work of the rock opera genre.
Tommy (album)
1958
Mao Zedong starts "Great leap forward" movement in China.
Great Leap Forward
1951
Delegates of the Dalai Lama sign the Seventeen Point Agreement. The contract affirmed Chinese sovereignty over Tibet. According to Tibetan officials, the document was signed under duress and is, therefore, invalid.
Seventeen Point Agreement for the Peaceful Liberation of Tibet ...
1949
The Federal Republic of Germany is established. The proclamation of the Grundgesetz, Germany's current constitution, marked the birth hour of the republic. The foundation of West Germany came four years after the demise of the Nazi regime and the end of World War II.
West Germany
1945
Heinrich Himmler, head of Adolf Hitler’s Gestapo, committed suicide while in prison.
Heinrich Himmler
1934
Bonnie (Parker) and Clyde (Barrow) were killed in a police shootout.
Bonnie and Clyde
1911
The New York Public Library, at the time the largest marble structure ever built in the United States, was dedicated by President Taft in New York City after 16 years of construction.
New York Public Library Main Branch
1873
The North West Mounted Police force was formed in Canada. It would later be known as the Royal Canadian Mounted Police.
North-West Mounted Police
1844
Siyyid `Alí Muḥammad Shírází founds Bábism. The Báb, as he called himself, created the religion which was a forerunner of the Bahá'í Faith. His teachings were seen as a threat by the Islamic clergy, and his followers were brutally persecuted by the Persian government.
Báb
1830
The Baltimore and Ohio Railroad began the first passenger service in the United States.
Baltimore and Ohio Railroad
1813
South American independence leader Simón Bolívar enters Mérida, leading the invasion of Venezuela, and is proclaimed El Libertador ("The Liberator").
Military career of Simón Bolívar
1788
South Carolina became the 8th state in United States.
South Carolina
1785
Benjamin Franklin announces his invention of bifocals.
18th century
1618
2nd Defenestration of Prague; beginning of 30 Years War. Two Catholic Lords Regent and their secretary thrown out of window - they were not seriously injured by the 70 foot fall.
Defenestrations of Prague
1430
Joan of Arc was captured by the Burgundians and subsequently sold to the English.
Joan of Arc