"On March 25, 1911, a mere three days after the founding of the Wage Earner’s Suffrage League, the Triangle Shirtwaist Factory Fire transformed what Americans (especially in rural areas) knew and how they thought about factory work. When the fire broke out on the upper floors of the Asch Building at closing time on Saturday March 25, 1911, panicked workers instinctively ran for the nearest exits only to discover that the doors had been locked ostensibly to prevent employee thefts. Trapped in the inferno on the eighth, ninth, and tenth floors of the building too high up for ladders and hoses to reach, desperate workers jumped to their deaths. The fire claimed the lives of 146 immigrant workers, mostly Jewish and Italian women. Front-page banner headlines in newspapers across the country bore news of the tragedy and immediately heightened public awareness about the dangers of the industrial workplace. The time had come for state intervention. New York convened a factory investigating commission that would eventually pass more than thirty workplace fire, safety, and health laws. In 1914, the Smith Bill went as far as limiting the number of hours that women and children would be allowed to work."
For more on how the Fire galvanized New York City's nationally pivotal suffrage movement, check out this article by Karen Pastorello in Gotham: A Blog for Scholars of New York City History.