Editing June 21 (section)

===1901–present===
*[[1915]] &ndash; The [[Supreme Court of the United States|U.S. Supreme Court]] hands down its decision in ''[[Guinn v. United States]]'' 238 US 347 1915, striking down [[Oklahoma]] [[grandfather clause]] legislation which had the effect of denying the right to vote to blacks.
*[[1919]] &ndash; The [[Royal Canadian Mounted Police]] fire a volley into a crowd of unemployed war veterans, killing two, during the [[Winnipeg general strike]].
*  1919   &ndash; Admiral [[Ludwig von Reuter]] [[Scuttling of the German fleet at Scapa Flow|scuttles the German fleet]] at [[Scapa Flow]], [[Orkney]]. The nine sailors killed are the last casualties of [[World War I]].
*[[1921]] &ndash; The Irish village of Knockcroghery [[Knockcroghery#Burning of Knockcroghery|was burned by British forces]].<ref>{{Cite web|url=https://www.westmeathindependent.ie/2021/06/18/local-community-to-mark-centenary-of-night-of-terror/|title=Local community to mark centenary of 'night of terror'|date=18 June 2021 }}</ref><ref name="autogenerated21">Healy, P., ''God Save All Here'' (1999) at p.21.</ref><ref name="Roscommon People 2016, p. 39">Roscommon People, 24 June 2016, at p. 39</ref>
*[[1929]] &ndash; An agreement brokered by U.S. Ambassador [[Dwight Whitney Morrow]] ends the [[Cristero War]] in Mexico. 
*[[1930]] &ndash; One-year [[conscription]] comes into force in France.
*[[1940]] &ndash; [[World War II]]: Italy begins an [[Italian invasion of France|unsuccessful invasion]] of France.
*[[1942]] &ndash; World War II: [[Axis capture of Tobruk|Tobruk falls]] to Italian and German forces; 33,000 Allied troops are taken prisoner.<ref>* {{cite book |last=Playfair |first=I. S. O. |year=2004 |title=The History of the Second World War - The Mediterranean and Middle East: British Fortunes Reach Their Lowest Ebb |volume=III |url=http://www.ibiblio.org/hyperwar/NHC/NewPDFs/UK/UK%20MME-3.pdf |location=London |publisher=HMSO |edition=pbk. repr. Naval and Military Press, Uckfield |isbn=978-1-84574-067-2 |author-link=I. S. O. Playfair|pages=266–274}}</ref>
*  1942   &ndash; World War II: A Japanese submarine surfaces near the Columbia River in Oregon, [[Bombardment of Fort Stevens|firing 17 shells at Fort Stevens]] in one of only a handful of attacks by Japan against the United States mainland.
*[[1945]] &ndash; World War II: The [[Battle of Okinawa]] ends when the organized resistance of [[Imperial Japanese Army]] forces collapses in the Mabuni area on the southern tip of the main island.
*[[1952]] &ndash; The Philippine School of Commerce, through a republic act, is converted to Philippine College of Commerce, later to be the [[Polytechnic University of the Philippines]].
*[[1957]] &ndash; [[Ellen Fairclough]] is sworn in as Canada's first female [[Cabinet of Canada|Cabinet Minister]].
*[[1963]] &ndash; Cardinal Giovanni Battista Montini is [[1963 papal conclave|elected]] as [[Pope Paul VI]].
*[[1964]] &ndash; Three [[civil rights movement|civil rights]] workers, [[Andrew Goodman (activist)|Andrew Goodman]], [[James Chaney]] and [[Michael Schwerner]], [[Murders of Chaney, Goodman, and Schwerner|are murdered]] in [[Neshoba County, Mississippi]], United States, by members of the [[Ku Klux Klan]].
*[[1970]] &ndash; [[Penn Central]] [[Bankruptcy of Penn Central|declares]] Section 77 [[bankruptcy]] in what was the largest U.S. corporate bankruptcy to date.<ref>{{cite news|last=Charlton|first=Linda|title=Penn Central Is Granted Authority to Reorganize Under Bankruptcy Laws|work=The New York Times|date=June 22, 1970|pages=1, 74|access-date=June 21, 2020|url=https://www.nytimes.com/1970/06/22/archives/penn-central-is-granted-authority-to-reorganize-under-bankruptcy.html|postscript=none}}; {{cite book|last=Markham|first=Jerry W.|title=A Financial History of the United States. Volume 3: From the Age of Derivatives into the New Millennium (1970-2001)|location=Armonk, N.Y.|publisher=M.E. Sharpe|date=2002|isbn=9780765607300|page=5}}</ref>
*[[1973]]   &ndash; The [[Primer Congreso del Hombre Andino]] is inaugurated in [[Arica]], Chile.<ref>{{Cite journal |title=Luis Guillermo Lumbreras Salcedo: su vida y trascendencia junto al pasado de los países andinos (1936-2023) |journal=[[Estudios Atacameños]] |last=Núñez Atencio |first=Lautaro |url=https://www.jstor.org/stable/48772081 |volume=69 |author-link=Lautaro Núñez Atencio |language=es |doi=10.22199/issn.0718-1043-2023-0031|year=2023|pages=1–7 |jstor=48772081 |doi-access=free }}</ref>
*1973 &ndash; In its decision in ''[[Miller v. California]]'', 413 U.S. 15, the [[Supreme Court of the United States]] establishes the [[Miller test]] for determining whether something is [[obscenity|obscene]] and not protected speech under the U.S. constitution.<ref>{{cite book|last=Cohen|first=Henry|title=Obscenity and Indecency: Constitutional Principles and Federal Statutes|location=New York|publisher=Novinka Books|date=2003|isbn=9781590337493|url=https://books.google.com/books?id=FeRWNgMa5zAC|pages=2–3}}</ref>
*[[1978]] &ndash; The original production of [[Tim Rice]] and [[Andrew Lloyd Webber]]'s [[Musical theatre|musical]], ''[[Evita (musical)|Evita]]'', based on the life of [[Eva Perón]], opens at the [[Prince Edward Theatre]], [[London]].
*[[1982]] &ndash; [[John Hinckley Jr.|John Hinckley]] is found [[Insanity defense|not guilty by reason of insanity]] for the [[Attempted assassination of Ronald Reagan|attempted assassination]] of U.S. President [[Ronald Reagan]].
*[[1985]] &ndash; [[Braathens SAFE Flight 139]] is hijacked on approach to [[Oslo Airport, Fornebu]]. Special forces arrest the hijacker and there are no fatalities.<ref>{{cite web |author= |title=21-Jun-1985 |url=http://aviation-safety.net/database/record.php?id=19850621-0 |access-date=11 September 2009 |website=Aviation Safety Network |publisher=[[Flight Safety Foundation]]}}</ref>
*[[1989]] &ndash; The [[U.S. Supreme Court]] rules in ''[[Texas v. Johnson]]'', 491 U.S. 397, that American flag-burning is a form of political protest protected by the First Amendment.<ref>{{cite book|last=Welch|first=Michael|title=Flag Burning: Moral Panic and the Criminalization of Protest|location=New York|publisher=Aldine de Gruyter|date=2000|isbn=9780202306513|url=https://books.google.com/books?id=s5btT1HO60kC|pages=68–71}}</ref>
*[[1993]] &ndash; [[Space Shuttle Endeavour|Space Shuttle ''Endeavour'']] is launched on [[STS-57]] to retrieve the [[European Retrievable Carrier]] (EURECA) satellite. It is also the first shuttle mission to carry the [[Astrotech Corporation|Spacehab]] module.<ref name="STS-57">{{cite web |date=March 31, 2010 |title=STS-57 |url=https://www.nasa.gov/mission_pages/shuttle/shuttlemissions/archives/sts-57.html |access-date=February 12, 2022 |publisher=NASA}} {{PD-notice}}</ref>
*[[2000]] &ndash; [[Section 28]] (of the [[Local Government Act 1988]]), outlawing the 'promotion' of [[homosexuality]] in the United Kingdom, is repealed in Scotland with a 99 to 17 vote.
*[[2001]] &ndash; A federal grand jury in [[Alexandria, Virginia]], indicts 13 Saudis and a Lebanese in the 1996 bombing of the [[Khobar Towers bombing|Khobar Towers]] in [[Saudi Arabia]] that killed 19 American servicemen.
*[[2004]] &ndash; ''[[SpaceShipOne]]'' becomes the first privately funded [[spaceplane]] to achieve [[Human spaceflight|spaceflight]].
*[[2005]] &ndash; [[Edgar Ray Killen]], who had previously been unsuccessfully tried for the murders of James Chaney, Andrew Goodman, and Mickey Schwerner, is convicted of manslaughter 41 years afterwards (the case had been reopened in 2004).
*[[2006]] &ndash; [[Pluto]]'s newly discovered moons are officially named [[Nix (moon)|Nix]] and [[Hydra (moon)|Hydra]].
*2006   &ndash; A [[Yeti Airlines]] [[de Havilland Canada DHC-6 Twin Otter]] [[2006 Yeti Airlines Twin Otter crash|crashes]] at [[Jumla Airport]] in Nepal, killing nine people.<ref name="NT">{{Cite news |date=June 21, 2006 |title=Yeti crash, 9 dead |work=Nepali Times |url=https://archive.nepalitimes.com/news.php?id=12024 |accessdate=October 12, 2017}}</ref>
*[[2009]] &ndash; [[Greenland]] assumes [[self-governance|self-rule]].
*[[2012]] &ndash; A boat carrying more than 200 migrants [[2012 Indian Ocean migrant boat disaster|capsizes]] in the Indian Ocean between the Indonesian island of Java and Christmas Island, killing 17 people and leaving 70 others missing.
*2012   &ndash; An [[Indonesian Air Force]] [[Fokker F27 Friendship]] [[2012 Indonesian Air Force Fokker F27 crash|crashes]] near [[Halim Perdanakusuma International Airport]], killing 11.<ref name="Flight-Int-1">{{cite news |last1=Waldron |first1=Greg |date=21 June 2012 |title=Indonesian air force Fokker F27 crashes near Jakarta |url=https://www.flightglobal.com/news/articles/indonesian-air-force-fokker-f27-crashes-near-jakarta-373242/ |accessdate=6 February 2019 |work=[[Flight International]]}}</ref>