Editing 1921 (section)

=== May ===
{{Main|May 1921}}
* [[May 1]]&ndash;[[May 7|7]] &ndash; [[Jaffa riots]]: Riots at [[Jaffa]], [[Mandatory Palestine]] result in 47 Jewish and 48 Arab deaths.{{citation needed|date=May 2025}}
* [[May 2]]&ndash;[[July 5]] &ndash; [[Silesian Uprisings#Third Silesian Uprising (1921)|Third Silesian Uprising]]: Poles in [[Upper Silesia]] rise against the Germans.{{citation needed|date=May 2025}}
* [[May 3]] &ndash; The province of [[Northern Ireland]] is created within the United Kingdom.<ref>{{cite book |author-link=Alvin Jackson (historian) |first=Alvin |last=Jackson |title=Home Rule – An Irish History |publisher=Oxford University Press |year=2004 |pp=368-370}}</ref>
* [[May 5]]
** London Schedule of Payments sets out the [[World War I reparations]] payable by the German [[Weimar Republic]] and other countries considered successors to the [[Central Powers]] &ndash; 132&nbsp;billion gold marks ($33&nbsp;billion), in annual installments of 2.5&nbsp;billion.{{citation needed|date=May 2025}}
** [[Chanel No. 5]] perfume launched by [[Coco Chanel]].<ref>{{cite book|first=Sandrine|last=Papleux|title=Coco Chanel: Une couturière à contre-courant|publisher=50 Minutes|year=2016|isbn=9782806274458|page=26}}</ref>
** Only 13 paying spectators attend the football match between [[Leicester City F.C.|Leicester City]] and [[Stockport County F.C.]] in England, the lowest attendance in [[The Football League]]'s history.<ref>It is estimated that between 1,000 and 2,000 people actually attended the match; [[Manchester United F.C.]] had played a home game at the venue immediately beforehand, and some of the spectators for that match had stayed on to watch the Stockport match for free. However, only thirteen people paid at the gate to watch the Stockport match by itself. {{cite web|url=http://www.footballsite.co.uk/Statistics/Articles/GroundsDoupleUp.htm|title=Two grounds have doubled up on staging League matches on the same day|work=footballsite.co.uk|access-date=2012-05-08|archive-url=https://web.archive.org/web/20130731080311/http://www.footballsite.co.uk/Statistics/Articles/GroundsDoupleUp.htm|archive-date=July 31, 2013|url-status=dead}}</ref>
* [[May 6]] &ndash; The German-Soviet Provisional Agreement is signed: Germany recognises the Soviet government in the [[RSFSR]].{{citation needed|date=May 2025}} 
* [[May 14]]&ndash;[[May 15|15]] &ndash; The major [[May 1921 geomagnetic storm]] occurs.{{citation needed|date=May 2025}}
* [[May 14]]&ndash;[[May 17|17]] &ndash; Violent anti-European riots occur in [[Cairo]] and [[Alexandria]], [[Egypt]].{{citation needed|date=May 2025}}
* [[May 16]] &ndash; The [[Communist Party of Czechoslovakia]] is founded.{{citation needed|date=May 2025}}
* [[May 19]] &ndash; The [[Emergency Quota Act]] is passed by the [[United States Congress]], establishing national quotas on immigration. Because this drastically limits immigration from [[Eastern Europe]], [[Jews]] emigrating from there begin to prefer [[Mandatory Palestine|Palestine]] as a destination rather than the U.S.{{citation needed|date=May 2025}}
* [[May 22]] &ndash; In the first [[golf]] international between the two countries, the United States beats the United Kingdom 9 rounds to 3.{{citation needed|date=May 2025}}
* [[May 23]]&ndash;[[July 16]] &ndash; The [[Leipzig War Crimes Trials]] are held in Germany.{{citation needed|date=May 2025}}
* [[May 24]] &ndash; [[1921 Irish elections]]: In the [[1921 Northern Ireland general election|first Northern Ireland general election]] for the new [[Parliament of Northern Ireland]], [[Ulster Unionists]] win 40 out of 52 seats. The [[dominant-party system]] here will last for fifty years.{{citation needed|date=May 2025}}
* [[May 25]] &ndash; [[Irish War of Independence]]: The [[Irish Republican Army]] occupies and burns [[The Custom House]] in [[Dublin]], the centre of local government in Ireland. Five IRA men are killed, and over 80 are captured by the [[British Army]] which surrounds the building.<ref>{{cite book|title=Michael Collins's Intelligence War|first=Michael T.|last=Foy|year=2006|isbn=0-7509-4267-3|pages=214–218|publisher=Sutton }}</ref>
* [[May 26]] &ndash; A [[general strike]] begins in Norway.{{citation needed|date=May 2025}}
* [[May 31]]&ndash;[[June 1]] &ndash; [[Tulsa Race Massacre]] (Greenwood Massacre): Mobs of white residents attack black residents and businesses in [[Greenwood District, Tulsa]], Oklahoma. The official death toll is 36, but later investigations suggest an actual figure between 100 and 300. 1,250 homes are destroyed and roughly 6,000 African Americans imprisoned in one of the worst incidents of [[mass racial violence in the United States]].{{citation needed|date=May 2025}}