Demonstrators have hit the streets of cities across the United States for the first “No Kings” protest since the joint US and Israeli war against Iran began one month ago.

Saturday’s marches and rallies mark the third round of nationwide “No Kings” protests since President Donald Trump took office for a second term.

According to the “No Kings” website, more than 3,300 events were planned across all 50 states, with large crowds expected in cities such as New York, Los Angeles and Washington, DC. Parallel events are happening internationally in cities such as Rome, Paris, and Berlin.

Organisers, however, are aiming to rally voters outside of the US’s major metropolises, in areas that tend to skew conservative. They say that roughly two-thirds of participants are expected to take part in events outside of major city centres.

“The defining story of this Saturday’s mobilisation is not just how many people are protesting, but where they are protesting,” said Leah Greenberg, cofounder of the progressive nonprofit Indivisible, which started the “No Kings” movement last year.

The main event, however, was scheduled for the Minneapolis-St Paul area in Minnesota, known as the Twin Cities.

The midwestern state became a focal point for Trump’s hardline immigration crackdown in December, when he launched Operation Metro Surge.

That operation saw more than 3,000 of federal immigration agents descend on the Twin Cities, where they were accused of using excessive force to conduct deportation raids.

In January, agents shot and killed two US citizens, Alex Pretti and Renee Nicole Good, prompting nationwide outrage and calls for reform. Dozens of lawsuits have been filed as a result of the operation, which was wound down in February.

Saturday’s protest will commemorate those deaths in Minnesota, with speeches, concerts and appearances from activists, labour leaders and politicians.

Progressive Senator Bernie Sanders addressed attendees, and rock icon Bruce Springsteen performed at the event, along with folk singer Joan Baez.

“It is your courage and your commitment that have inspired all of us. You have shown the power of nonviolent protest,” actor Robert De Niro told the crowd in Minnesota in a pre-recorded address.

“You’ve shown bravery in the face of armed attack by government thugs, and you stood together and ran them out of town.”

Elsewhere, early on Saturday, marchers in Washington, DC, gathered around landmarks such as the Lincoln Memorial and the Washington Monument, holding signs and waving papier-mache effigies of the Trump administration.

The previous two “No Kings” marches took place in June and October and drew millions of people. Trump responded to the October protest by posting an AI-generated video depicting himself dumping faeces on the protesters.

The US is currently in the midst of campaigns for its pivotal midterm elections in November, which will see Trump’s Republican Party seek to defend its majorities in both chambers of Congress.

Democrats, meanwhile, are hoping to gain seats as Trump’s popularity droops. Sanders was among the speakers who reminded protest attendees of the importance of the upcoming vote.

“We will not allow this country to descend into authoritarianism or oligarchy,” Sanders told the crowd in Minnesota. “In America, we the people will rule.”