May 23

An estimated 100,000 textile workers, including more than 10,000 children, strike in the Philadelphia area. Among the issues: 60-hour workweeks, including night hours, for the children - 1903
 
The Battle of Toledo begins today: a five-day running battle between roughly 6,000 strikers at the Electric Auto-Lite company of Toledo, Ohio, and 1,300 members of the Ohio National Guard. Two strikers died and more than 200 were injured. The battle began in the sixth week of what ultimately became a successful two-month fight for union recognition and higher pay. One guardsman told aToledo Blade reporter: "Our high school graduation is... tonight and we were supposed to be getting our diplomas” – 1934

U.S. railroad strike starts, later crushed when President Truman threatens to draft strikers - 1946
 
The Granite Cutters Int’l Association of America merges with Tile, Marble, Terrazzo, Finishers & Shopmen, which five years later merged into the Carpenters - 1983