Cities large and small were preparing for major demonstrations Saturday across the U.S. against President Donald Trump, as officials urge calm, National Guard troops mobilize and Trump attends a military parade in Washington to mark the Army’s 250th anniversary.

The No Kings Day of Defiance protests will happen during the military parade in Washington on Saturday for the Army’s 250th anniversary — which coincides with Trump’s birthday.

Walmart heiress Christy Walton promoted a planned nationwide protest against President Trump by placing a full-page advertisement that ran in the New York Times on Sunday. The ad, which the billionaire heiress paid for,

No Kings is a nationwide protest organized in response to President Trump and his immigration policies. Here are live updates from Florida's rallies.