More than 1,000 demonstrators are expected to rally in West Palm Beach today for 'No Kings Day,' a nationwide event protesting Donald Trump on his birthday.

Demonstrators marched through the streets of Fort Collins June 14 as part of nationwide "No Kings" protests against the Trump administration.

Demonstrators are gathering in cities across the U.S. against President Donald Trump. That’s happening Saturday as officials urge calm, National Guard troops mobilize and Trump attends a military parade in Washington to mark the Army’s 250th anniversary.

Protesters began gathering early on the west steps of the state Capitol in Sacramento as a so-called "No Kings" protest against Trump administration policies, part of a nationwide day of demonstrations meant to coincide with a military parade marking the 250th anniversary of the U.

Anti-Trump protests are planned for Harrisburg, Lancaster, York, Gettysburg and thousands of other places throughout central Pennsylvania and the nation.

Thousands gathered for the No Kings protest at the Michigan State Capitol building in Lansing on Saturday, June 14.

Thousands of people gathered in downtown San Luis Obispo on Saturday as part of a national “No Kings Day” demonstration protesting the Trump administration. Organizers estimated between 3,000 and 5,000 people joined in the San Luis Obispo protest, gathering in front of the downtown courthouse with signs reading “No kings!” and “Save democracy!”

No Kings' protests coincide with Flag Day, President Trump's birthday and the U.S. Army's 250th anniversary celebration and military parade in D.C.