Hannah Gutierrez-Reed is found guilty of involuntary manslaughter in the death of Halyna Hutchins on the set of the movie Rust, the first time someone has been found guilty for causing a death on a movie set.
Sweden officially joins NATO, becoming its 32nd member.
At least 108 die and 615 are injured in the 2021 Bata explosions in Bata, Equatorial Guinea.
Massereene Barracks shooting: The Real Irish Republican Army kills two British soldiers and injures two other soldiers and two civilians at Massereene Barracks, the first British military deaths in Northern Ireland since the end of The Troubles.
Reform of the House of Lords: The British House of Commons votes to make the upper chamber, the House of Lords, 100% elected.
Garuda Indonesia Flight 200 crashes at Adisutjipto International Airport in the Special Region of Yogyakarta, Indonesia, killing 21 people.
The terrorist organisation Lashkar-e-Taiba coordinates a series of bombings in Varanasi, India.
Iran and the United Kingdom break diplomatic relations after a fight over Salman Rushdie and his controversial novel, The Satanic Verses.
Challenger Disaster: Divers from the USS Preserver locate the crew cabin of Challenger on the ocean floor.
Bloody Sunday: A group of 600 civil rights marchers are brutally attacked by state and local police in Selma, Alabama.
Aeroflot Flight 542 crashes in the Yermakovsky District, killing all 31 aboard.
Northwest Orient Airlines Flight 307 crashes in Lynnhurst, Minneapolis, killing 15 people.
Korean War: Operation Ripper: United Nations troops led by General Matthew Ridgway begin an assault against Chinese forces.
Iranian prime minister Ali Razmara is assassinated by Khalil Tahmasebi, a member of the Islamic fundamentalist Fada'iyan-e Islam, outside a mosque in Tehran.
World War II: Günther Prien and the crew of German submarine U-47, one of the most successful U-boats of World War II, disappear without a trace.
The Parliament House of Finland is officially inaugurated in Helsinki, Finland.
The short-lived socialist Labin Republic is proclaimed.
Second Boer War: Boers, led by Koos de la Rey, defeat the British at the Battle of Tweebosch.
Alexander Graham Bell is granted a patent for an invention he calls the "telephone".
Senator Daniel Webster gives his "Seventh of March" speech endorsing the Compromise of 1850 in order to prevent a possible civil war.
Shrigley abduction: 15-year old Ellen Turner is abducted by Edward Gibbon Wakefield, a future figure in the establishment of colonies in South Australia and New Zealand.
Emperor Napoleon I of France wins the Battle of Craonne.
Napoleon Bonaparte captures Jaffa in Palestine and his troops proceed to kill more than 2,000 Albanian captives.
A peace treaty is signed between the Ottoman Empire and the Republic of Venice, ending the Ottoman–Venetian War and leaving Cyprus in Ottoman hands.
The University of Paris issues the last in a series of condemnations of various philosophical and theological theses.
Konrad III von Hohenstaufen is elected king of Germany at Coblenz in the presence of the papal legate Theodwin.
The Third Council of Constantinople deposes patriarch Macarius I of Antioch.
Marcus Aurelius and L. Commodus (who changes his name to Lucius Verus) become joint emperors of Rome on the death of Antoninus Pius.