The largest military parade in Washington in decades unfolded Saturday alongside hundreds of protests against it, and its chief organizer

Meanwhile, "No Kings" protests were scheduled in all 50 states to counter Trump's celebration, in cities like New York, Los Angeles, Philadelphia and Boise.

The "No Kings" protest and march happening in Philadelphia on Saturday coincides with hundreds of rallies scheduled to take place across the country.

The parade, honoring the Army’s long-planned 250th anniversary celebration and coinciding with Trump’s 79th birthday, is set to step off from the Lincoln Memorial under the threat of stormy weather in Washington and protests around the country tied to a turbulent week of immigration enforcement that has involved military deployment in Los Angeles.

Army's 250th anniversary celebrated with a military parade in Washington, D.C., on Trump's birthday. 'No Kings' protests by opponents are planned across the country.

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

The parade was the spectacle event Trump had long wanted. It also helped sparked the largest mass opposition to him since his inauguration 145 days earlier.

The DC "No Kings" protest is marching to the White House on Saturday afternoon as President Trump hosts a celebration for the 250th anniversary of the U.S. Army.

Tens of thousands of Americans joined "No Kings" protests across the United States against the Trump administration.