Some 10,000 striking miners began a fight at Blair Mountain, W.Va., for recognition oftheir union, the United Mine Workers of America. Federal troops were sent in and miners were forced to withdraw five days later, after 16 deaths - 1921
The Trade Union Unity League is founded as an alternative to the American Federation of Labor, with the goal of organizing along industrial rather than craft lines. An arm of the American Communist Party, the League claimed 125,000 members before it dissolved in the late 1930s - 1929
"Solidarity" workers movement founded as a strike coordination committee at Lenin Shipyards, Gdansk, Poland. The strike launched a wave of unrest in the Soviet Union that ultimately led to its dissolution in 1991 - 1980
An estimated 325,000 unionists gathered in Washington, D.C., for a Solidarity Day march and rally for workplace fairness and healthcare reform - 1991 photo: Anne Martens/Page One Photography
Detroit teachers begin what is to become a 9-day strike, winning smaller class sizes and raises of up to 4 percent - 1999
- compiled/edited by David Prosten at Union Communication Services.