WHAT ALL HAPPENED MAY TO AUGUST 1921
Find out what all happened May to August 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)

Workers of Buckingham and Carnatic Mills in the city of Chennai, India, begin a four-month strike. (20. June 1921)

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

The Communist Party of China is founded. (1. July 1921)

Serbian King Alexander I proclaimed the new constitution of the Kingdom of Serbs, Croats and Slovenes, known thereafter as the Vidovdan Constitution. (28. June 1921)

Major League Baseball Commissioner Kenesaw Mountain Landis confirms the ban of the eight Chicago Black Sox, the day after they were acquitted by a Chicago court. (3. August 1921)

Tannu Uriankhai, later Tuvan People's Republic is established as a completely independent country (which is supported by Soviet Russia). (14. August 1921)

Tulsa Race Riot: civil unrest in Tulsa, Oklahoma. (1. June 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)

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

British airship R-38 experiences structural failure over Hull in England and crashes in the Humber estuary. Of her 49 British and American training crew, only 4 survive. (23. August 1921)

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

Belfast's Bloody Sunday: 16 people are killed and 161 houses destroyed during rioting and gun battles in Belfast, Northern Ireland. (10. July 1921)

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

The Red Army captures Mongolia from the White Army and establishes the Mongolian People's Republic. (11. July 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 British install the son of Sharif Hussein bin Ali (leader of the Arab Revolt of 1916 against the Ottoman Empire) as King Faisal I of Iraq. (27. August 1921)

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

Southwark Bridge in London is opened for traffic by King George V and Queen Mary. (6. June 1921)