WHAT ALL HAPPENED MAY TO DECEMBER 1921
Find out what all happened May to December 1921

The trial of Sacco and Vanzetti opens. (24. May 1921)

The Link River Dam, a part of the Klamath Reclamation Project, is completed. (29. October 1921)

Adolf Hitler becomes leader of the National Socialist German Workers Party. (29. July 1921)

A storage silo in Oppau, Germany, explodes, killing 500-600 people. (21. September 1921)

A truce in the Irish War of Independence comes into effect. (11. July 1921)

Japanese Prime Minister Hara Takashi is assassinated in Tokyo. (4. November 1921)

Roscoe "Fatty" Arbuckle party in San Francisco ends with the death of the young actress Virginia Rappe: one of the first scandals of the Hollywood community. (5. September 1921)

Tulsa race riot: civil unrest in Tulsa, Oklahoma. The official death toll is 39, but recent investigations suggest the actual toll may be much higher. (31. May 1921)

The first skirmishes of the Battle of Blair Mountain occur. (25. August 1921)

U.S. President Warren G. Harding appoints former President William Howard Taft Chief Justice of the United States. (30. June 1921)

The Legion of Mary, the largest apostolic organization of lay people in the Catholic Church, is founded in Dublin, Ireland. (7. September 1921)

16-year-old Margaret Gorman wins the Atlantic City Pageant's Golden Mermaid trophy; pageant officials later dubbed her the first Miss America. (8. September 1921)

Portuguese Prime Minister António Granjo and other politicians are murdered in a Lisbon coup. (19. October 1921)

Former President of the United States William Howard Taft is sworn in as 10th Chief Justice of the U.S. Supreme Court, becoming the only person ever to hold both offices. (11. July 1921)

The Soviet republics of Russia, Armenia, Azerbaijan, and Georgia sign the Treaty of Kars with the Grand National Assembly of Turkey to establish the contemporary borders between Turkey and the South Caucasus states. (13. October 1921)

The U.S. Congress passes the Emergency Quota Act establishing national quotas on immigration. (19. May 1921)

The Italian unknown soldier is buried in the Altare della Patria (Fatherland Altar) in Rome. (4. November 1921)

The first Virginia Rappe manslaughter trial against Roscoe "Fatty" Arbuckle ends in a hung jury. (4. December 1921)

The Sturmabteilung or SA, whose members were known as "brownshirts", physically assault Adolf Hitler's opposition after his speech in Munich. (4. November 1921)

Researchers at the University of Toronto led by biochemist Frederick Banting prove that the hormone insulin regulates blood sugar. (27. July 1921)