The union also became more involved in electoral politics, in part as a result of the Triangle Shirtwaist Factory fire on March 25, 1911, in which one hundred and forty-six shirtwaist makers (most of them young immigrant women) either died in the fire that broke out on the eighth floor of the factory, or jumped to their deaths. Many of these workers were unable to escape because the doors on their floors had been locked to prevent them from stealing or taking unauthorized breaks. More than 100,000 people participated in the funeral march for the victims.