No Kings protests are kicking off across the Bay Area as part of a nationwide day of action against President Donald Trump’s administration.

Local organizers have said they hope to match or exceed the size of crowds seen at the previous No Kings Days, which were among the largest protests in the nation’s history. However, Indivisible SF said many participants have not registered online, making turnout difficult to predict.

The protests are aimed at opposing the administration’s immigration crackdown, military actions abroad, and what they describe as attacks on civil rights and democratic norms.

San Francisco is expected to host one of the region’s largest gatherings. The main march is scheduled to begin around noon, moving along Market Street before ending with a rally at Civic Center Plaza. Organizers with Indivisible SF say participants will begin gathering at 11:30 a.m. near Embarcadero Plaza. A rally is planned from about 2 to 3:30 p.m. at Civic Center Plaza, along with a fair at nearby Fulton Plaza. Earlier in the day, protesters will form a human banner at Ocean Beach at 11:30 a.m.

Chronicle reporters are at protests in San Francisco and Oakland, and we will be providing live updates from the scene, as well as rounding up news happening across the country. Follow this live updating page for the latest developments all day.

Protesters rallied against President Donald Trump in more than a dozen other countries Saturday, from Europe to Latin American to Australia, Indivisible co-executive director Ezra Levin told the Associated Press. Countries with constitutional monarchies called the protests No Tyrants.

Several hundred people, mostly Americans living in Europe as well asFrench labor unions, gathered at the Bastille in Paris on Saturday morning to protest Trump.

“I protest all of Trump’s illegal, immoral, reckless and feckless endless wars,” Ada Shen, the Paris No Kings organizer, told the Associated Press.

In Rome, thousands of people marched with chants aimed at Premier Giorgia Meloni, whose right-wing government saw its referendum for streamlining Italy’s judiciary badly fail this week amid criticism that it was a threat to the courts’ independence. Protesters waved banners protesting the Israeli and U.S. attacks on Iran, calling for “A world free from wars.”

In London, people protesting the war in Iran held banners that said, “Stop the far right” and “Stand up to racism.”