A total of 146 workers - almost all of them immigrant women - were killed in a fire at the Triangle Shirtwaist Factory.
Members of federal workers and postal employee unions mobilized against Republican budget schemes that would - again - cut their pay.
The student-led boycott will be launched at Ohio State University and will snowball over the coming months as dozens more universities adopt it.
"For far too long, our rigged immigration system has allowed employers to drive down wages and working conditions in our country."
"The Food Service Industry experiences the highest number of burns of any employment sector, about 12,000 each year."
The former judge who heard the 4,016 cases in the explosion's aftermath is speaking out for the strikers.
Demonstrators protesting the national wave of wage and safety cuts and anti-union assaults, were led by the West Virginia AFL-CIO and joined by national labor leaders.
"Racism and dog whistle politics is being used to keep us all divided, and that division holds back our ability to win wage increases and improve our standard of living."
"In reality, it would rob poor and struggling students of the resources, supports, and funding they need to succeed."
Philadelphia joins two other cities, San Francisco, Calif., and Tacoma, Wash., and several states, in enacting earned paid sick leave.