TIL May Day, not on the same day as US Labor Day, started "in commemoration of the Haymarket Riot in Chicago (1886)." (www.britannica.com)
In 1889 an international federation of socialist groups and trade unions designated May 1 as a day in support of workers, in commemoration of the Haymarket Riot in Chicago (1886). Five years later, U.S. Pres. Grover Cleveland, uneasy with the socialist origins of Workers’ Day, signed legislation to make Labor Day—already...
