** The Workers Party of South Korea is founded.

** In India, May 1 is declared as ' Maharashtra Divas ', i. e., Maharashtra Day ( also celebrated as ' Kaamgaar Divas ', i. e., Workers Day ).

** While working as a spy for the police, Adolf Hitler is ordered to monitor the German Workers Party.

** The Steel Workers Organizing Committee is founded in the United States.

** The United Farm Workers Organizing Committee ( UFWOC ), predecessor of the United Farm Workers of America ( UFW ), is formed.

** The Party of the Alliance of Youth, Workers and Farmers of Angola is founded in Luanda, Angola.

** The United Mine Workers of America is founded.

** The Polish United Workers ' Party votes to legalize Solidarity.

** César Chávez, American labor activist, United Farm Workers founder ( d. 1993 )

** ( Workers ' Party of Ethiopia ) 1984-1991

** Hungary ( Hungarian Working People's Party ) 1948-1956, ( Hungarian Socialist Workers ' Party ) 1956-1989

** North Vietnam ( Workers ' Party of Vietnam ) 1945-1976

** Poland ( Polish United Workers ' Party led the Patriotic Movement for National Rebirth ) 1948-1989

** ( National Socialist German Workers ' Party ) 1933-1945

** United Farm Workers headquarters

** Arbeiter-und Soldatenräte ( Workers ' and Soldiers ' Councils ) established throughout Germany, beginning in Kiel, during the German Revolution of November 1918, including Bremen, Braunschweig, Würzburg, Munich ( Bavarian Soviet Republic ( 1918 – 1919 )) and Alsace ( Alsace Soviet Republic ( 8 – 22 November 1918 )).

** Finnish Socialist Workers ' Republic ( January – April 1918 ) in the south of Finland only: Social Democratic Party of Finland.

** Communication Workers Union ( South Africa )

** Communication Workers Union ( Trinidad and Tobago )

** Communication Workers Union ( UK )

** Communication Workers Union of Australia

** French Confederation of Christian Workers

** Workers ' Force

** Holocaust Memorial Day ( United Kingdom )

** Memorial Day or Il Giorno della Memoria ( Italy )

** Waterloo Memorial, another name for Wellington's Column

** In Washington, DC, the Holocaust Memorial Museum is dedicated.

** The Chicago Police Department shoot and kill ten unarmed demonstrators in Chicago in what is known as the Memorial Day massacre.

** The Busch Memorial Stadium opens in St Louis, Missouri.

** Elvis Presley begins his first concert tour since 1958 in Phoenix, Arizona at the Veterans Memorial Coliseum.

** Super Bowl VII: The Miami Dolphins defeat the Washington Redskins, 14 – 7, at the Los Angeles Memorial Coliseum, to complete the NFL's first Perfect Season in front of 90, 182 fans.

** Mount Rushmore National Memorial is dedicated.

** List of players in the Naismith Memorial Basketball Hall of Fame

** List of coaches in the Naismith Memorial Basketball Hall of Fame

** 2006-12-30 — Martian Analemma at Sagan Memorial Station ( simulated )

** September 11 Quilts Memorial Exhibition

** The World Trade Center Memorial Quilt

** America's 9-11 Memorial Quilts

** The World Trade Center / Pentagon / Pennsylvania Memorial Quilt

** New Zealand: The New Zealand AIDS Memorial Quilt

** Second Life AIDS Memorial Quilt

** Columbia University AIDS Memorial

** Person Memorial Hospital

** Westwood Village Memorial Park Cemetery

** Horace W. Stunkard ( unsigned ) in Nature 225 ( 1970 ): 393-94 and in Biology of the Turbellaria ( 1974, " Libbie H. Hyman Memorial Volume "), pp. ix-xiii, with a bibliography

** The Calder Memorial Trophy, a trophy presented to the best rookie of the year in the National Hockey League, in North America

** Memorial Stadium: Football