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

The president celebrates the 250th anniversary of the US Army as demonstrators hold "No Kings" events from coast to coast.

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.

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.

Thousands of Americans flocked to downtown D.C. in "Make America Great Again" hats and patriotic gear displaying Old Glory despite the balmy weather and thunderstorms brewing.

Demonstrations against President Trump's policies are planned across the nation to coincide with a parade in Washington, D.C., marking the Army's 250th anniversary. Follow along for live updates, news and analysis.

Coinciding with Trump's 79th birthday, the parade will feature tanks, bands and thousands of troops in honor of the Army’s 250th anniversary celebration.