March 29 (UPI) — Participants in the thousands of No Kings demonstrations across the United States said they came out to protest President Donald Trump for his crackdown on immigration, his decision to go to war in Iran, and even his decisions to put his name on federal property and money.

The organizers behind the No Kings movement estimated that about 8 million people turned out for Saturday’s protests, which took place across at least 3,000 individual locations in every single congressional district in the country. The New York Times reported, though, that the estimate could be off because organizers’ figures in some cases were higher than those reported by local public safety officials.

The marquee event at the Minnesota State Capitol in St. Paul drew more than 200,000, people, organizers said. Among them were Sen. Bernie Sanders, I-Vt., singer Joan Baez, actor Jane Fonda and Gov. Tim Walz. Rocker Bruce Springsteen performed his original song, “Streets of Minneapolis, inspired by civilian deaths at the hands of federal immigration officials during an enforcement crackdown earlier this year.

The Minnesota Star Tribune reported that the St. Paul demonstration had a dual purpose — condemning the Trump administration while also celebrating the those in the state who stood against the federal immigration enforcement surge.

Speaking at the St. Paul event, Minnesota Attorney General Keith Ellison called on attendees to “look past Trump and into the society we dream about.”

“Every right we fought for and won is under attack right now,” he said. “In part, we got ourselves into this mess because of an election, and we’re going to get out of this mess with an election.”

At the University of Iowa, organizers Katy Gates told The Times many college-age attendees were inspired to protest in response to the war in Iran. Trump authorized attacks on Iran in conjunction with Israel beginning Feb. 28. Some have taken issue with the now-monthlong involvement in a war without congressional approval.

“Our generation has grown up with this idea of endless war in the Middle East,” she said. “And the idea of getting into yet another is something that people are rightfully angry about.”

Sen. Kirsten Gillibrand, D-N.Y., went beyond protesting Saturday, announcing a bill to ban sitting presidents from putting their names on federal property and currency.

“In America, we do not bow to kings,” she said. “Our president should be focused on bringing down grocery prices, making healthcare affordable and ensuring every family can get ahead, not using their position to boost their own personal brand.

“It is time that we institute this ban and make sure that our government serves the people, not one person’s ego.”

Inspired by the addition of Trump’s name to the John F. Kennedy Performing Arts Center in Washington, D.C., and his plans to add his own signature to currency, the legislation would also ban banners with the president’s face on the side of federal buildings, naming a class of warships after a sitting president and putting their image on commemorative coins.