The"No Kings" protests are planned to oppose what they see as Trump's power grab. The number of planned events is nearly double that of the April 5 "Hands Off" protest that saw millions of Americans turn out in big and small cities nationwide.

The “No Kings” theme was orchestrated by the 50501 Movement, a national movement made up of everyday Americans who stand for democracy and against what they call the authoritarian actions of the Trump administration. The name 50501 stands for 50 states, 50 protests, one movement.

The Philadelphia protest is something of a flagship demonstration amid nationwide actions as Trump holds a controversial military parade in Washington, D.C.