The rally in New York's Greenwich Village neighborhood took place outside the former Triangle factory building, which burned March 25, 1911. Earlier, many people hoisting signs designed to look like shirtwaist blouses and bearing the names of the dead marched from Union Square several blocks south to the 10-story building, which is now part of New York University.
The Triangle fire killed 146 people and helped to galvanize the U.S. labor movement. The victims were mostly young immigrant women, many of whom jumped to their death to escape the flames. The tragedy prompted many improvements in fire safety across the country, such as sprinkler installation and laws mandating fire drills.
Days after the fire, 100,000 mourners marched in a funeral procession through the streets of New York, while another 250,000 lined the route. Their grief built support for the right of garment workers to unionize.
Many of the victims' family members and descendants attended the ceremony Friday. Pete Doob, a laboratory worker from Columbia, Md., came to honor his great aunt, 21-year-old Violet Schechter, who died in the fire just a week before she was to be married.
"There were no regulations back then and there was no union to enforce them. With neither of those, the workers didn't have a chance," Doob said.
Speakers repeatedly criticized Wisconsin Republican Gov. Scott Walker, who pushed through legislation earlier this month to eliminate public workers' right to collective bargaining. The new law has been temporarily blocked by a county judge.
Several other Republican governors, citing their states' dire money problems, have made similar efforts to weaken public employee unions, saying the pension and benefits unions have negotiated in the past are unsustainable over time.
U.S. Labor Secretary Hilda Solis, who spoke at the ceremony, offered her support for unions pushing back.
"Today we honor workers in communities all across this great country protesting loudly the actions to strip them of collective bargaining - of their right to have a voice in the workplace. We applaud you," Solis said.
Schumer went further, saying Walker and others "want to drag our nation back to 1911."
"Today some on the far right want to rob workers of their hard-earned collecting bargaining rights. They want to fray the social safety net under the false pretense of fiscal austerity," he said.
New York City Mayor Michael Bloomberg was booed during his remarks. His plan to curb pensions and lay off thousands of teachers has rankled unions.
President Barack Obama, in a proclamation recognizing the 100th anniversary of the fire, urged people across the country to participate in ceremonies honoring the workers who died in unsafe conditions. "Working Americans are the backbone of our communities and power the engine of our economy," he wrote.
At the rally, Cybele Locke, a historian from New London, Conn., said she believed many workers still face unsafe conditions.
"We still have a long way to go to give workers the right to organize. I am here in support of all those people who are standing for collective bargaining," she said.
Chuck Helms, a representative of the Hudson County Labor Council of New Jersey, said he had come to the ceremony because he believed workers' rights were fading.
"I cannot let my children or my grandchildren go back to that time," Helms said. "You know we are moving back. Not just unions, middle class in general is moving back in that direction. America has got to get out and protest."
