The victims and legacy of the 1911 Triangle Shirtwaist factory fire are being remembered with a new memorial. A structure of steel was dedicated Wednesday at the Manhattan building where the tragedy took place. It has the names of the 146 people, mostly immigrant girls and women, who were killed when a fire started at the clothing company. In the aftermath, it became a catalyst for the rise of the labor movement. The memorial is coming during a time of increased labor activism in some U.S. industries, with strikes by auto workers, hospital staff, film and television writers and screen actors.