On this day in Labor History the year was 1909. That was the day the International Ladies Garment Workers Union began a strike against the Triangle Shirtwaist Company.  Eventually, female workers struck at 339 of the 352 shirtwaist manufacturing firms in New York City. The strike was referred to as the “Uprising of the 20,000.”  

Source: Labor History in 2:00 » Blog Archive » September 27 The “Uprising of 20,000″ Girls and Women