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.

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 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 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.

No Kings” organizers described the events as a “nationwide day of defiance” against President Donald Trump and authoritarianism.

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

Demonstrators crowded into parks and plazas across the U.S. Saturday to rally against President Donald Trump as officials urged calm and mobilized National Guard troops ahead a military parade to mark the Army’s 250th anniversary that coincides with the president’s birthday.

McCormick was one of the thousands of people who participated in a “No Kings” protest at Old College Hall in Newark on June 14 to make a difference.

“The most threatening sound to an oligarch is laughter.”

Opponents of President Donald Trump’s administration are set to rally in nearly 2,000 cities and towns this weekend.

Texas police say there are more than 10,000 people in attendance at the Capitol for Saturday's 'No Kings' protest. Follow for live updates.