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 "No Kings" Chicago protest Saturday in Daley Plaza is one of the anchor events for a national anti-Trump movement. It is one of more than 1,800 protests being held nationwide in response to the Trump military parade.

Organizers have planned demonstrations in cities and towns across the country on the same day as President Trump’s parade in Washington to celebrate the Army.

Millions of people across the country are expected to join in protest this weekend against Donald Trump’s administration, a movement intended to coincide with the president’s planned military parade in Washington — and the commander-in-chief’s 79th birthday.

Dozens of protests are planned across Southern California on Saturday in response to the military parade being held in Washington D.C. No Kings website Locally in Southern California, dozens of "No Kings" protests are planned. A full list of events can be found here, but some are listed below:

Police in Sonoma and Napa counties are preparing as North Bay protesters join a nationwide wave of No Kings Day rallies.

As a military parade rolls through Washington, DC, on Saturday – President Donald Trump’s birthday – millions of Americans are expected to protest in what organizers predict will be the strongest display of opposition to Trump’s administration since he took office in January.

As the military presence ramped up in Los Angeles, communities are preparing for the largest protests against Trump since he took office.