Demonstration of protest and mourning for Triangle Shirtwaist Factory fire of March 25, 1911

"On March 25, 1911, fire swept through the Triangle Shirtwaist Factory in New York City, killing 146 employees, most of them women.

This photo was part of the exhibit The Way We Worked, on display at the National Archives in Washington DC in 2006..." 
Triangle Shirtwaist fire