This photograph shows garment workers on strike in New York City. In September 1909, the workers at the Triangle Shirtwaist Factory, one of some 600 such shops and factories in New York City, went on strike. (A shirtwaist is a tailored woman’s blouse worn with a skirt.) The workers at two other shops joined them. Then on November 22, 1909, thousands of workers in the “needles trade” filled the Great Hall at Cooper Union on East Seventh Street in Manhattan. Among them were Samuel Gompers, head of the American Federation of Labor, and Clara Lemlich, a Jewish immigrant who worked in the garment trade.