Thousands peacefully gathered at Civic Center and Waterfront Park, joining "No Kings" events across the region and the U.S.

Organizers are calling for Americans to attend demonstrations across the country to protest President Trump on his 79th birthday.

The LAPD said on social media that the people in the crowd were throwing "rocks, bricks, bottles and other objects" while they were near the federal building.

Tens of thousands of San Diego County residents took to the streets Saturday for "No Kings" Day, a nationwide protest against the policies of President Donald Trump coinciding with a military parade in the nation's capital.

The demonstrations come on the heels of protests flaring up around the country over federal immigration enforcement raids that began last week and Trump ordering National Guard troops and Marines to Los Angeles where protesters blocked a freeway and set cars on fire.

Coordinated "No Kings" protests are happening from coast to coast, part of a "national day of peaceful protest" against the Trump administration, expected to draw millions. Protesters in some areas braved wet weather to raise signs and chant slogans supporting the rights of immigrants and criticizing what they see as Trump's power grab.