PHILADELPHIA (AP) — 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 protests are aligned with President Donald Trump's June 14 military parade in Washington D.C., which is set to honor the U.S. Army's 250th anniversary, organizers said. June 14 is also Flag Day and Trump's 79th birthday.

Thousands of No Kings Day protests are expected across the U.S. on June 14 to protest the Trump administration's policies, including 33 in Iowa.

Demonstrators in the hundreds lined the streets of downtown Jackson outside of City Hall to take part in the 'No Kings' protest against President Trump

Columbus' massive Pride celebration takes place June 14. Meanwhile, No Kings rallies are planned across the region, state and nation.

It began with a moment of silence for a Minnesota lawmaker and her husband who were killed in what Gov. Tim Walz called a political assassination.

Tens of thousands of people participated in dozens of "No Kings" protests in downtown Los Angeles and throughout Southern California to join a coalition of activists across the country demonstrating "in defiance" of President Trump.