Thousands of protesters rallied across the country on Saturday against Immigration and Customs Enforcement (ICE) after an officer shot and killed a U.S. citizen in Minneapolis on Wednesday.

Minneapolis saw tens of thousands of people march the city streets, Time reported. Protests and vigils have been ongoing since Wednesday night. Minneapolis police said 30 people who were protesting Friday night were detained.

Over 100 people protested outside Austin City Hall in Texas, CBS Austin reported. Protester Linda Miller held a sign that called on ICE to be defunded.

"This is like 1930s Germany, and it`s only going to get worse," Miller told the news outlet. "It`s only going to get worse. The signs are all there."

In Massachusetts, hundreds filled Boston Common on Saturday, with protesters holding signs reading "No Kings in America," "ICE Out," and "Justice for Renee Good," referring to the woman killed in Minneapolis, The Boston Globe reported. Protests erupted in cities across Massachusetts since Thursday night.

"Perhaps it`s time to demand that all of our elected officials realize the moment that we are slipping into authoritarianism and outright fascism and shut this federal government down," Brian Garvey, executive director of Massachusetts Peace Action, told the Globe.

Los Angeles also saw hundreds gather in Pershing Square in downtown, NBC 4 Los Angeles reported.

Back on the East Coast, 100 demonstrators marched outside ICE`s field office in New York City, CBS News reported. Former Minneapolis residents Paige Francis and Rosalinda Romporto, who both marched in the Big Apple, told CBS News that Renee Nicole Macklin Good`s death was "really heartbreaking," adding that it`s "really hard to watch what`s happening in our community back at home."

Protests were largely organized by Indivisible, a social movement focused on pushing back on the Trump administration. They organized both iterations of the "No Kings" protests last year.

"This weekend, people across the country are coming together to grieve, honor those we`ve lost, and demand accountability from a system that has operated with impunity for far too long," Leah Greenberg, co-executive director of Indivisible, wrote in a statement.

Macklin Good was killed in her SUV during an ICE operation. Homeland Security Secretary Kristi Noem said ICE officer Jonathan Ross defended himself, accusing Macklin Good of attempting to run him over with her SUV. Noem and the Trump administration`s defense of Ross drew condemnation, including from Minneapolis Mayor Jacob Frey (D).

Frey gave support to the protesters, urging them to not "take the bait" and give President Trump what he "wants."

"He wants us to take the bait. He wants those agitators to get a hold of this crowd in a way that it makes them cause harm to others and or damage to property," Frey said Saturday. "To them, I want to say my deepest thanks. We are so grateful for everything you`ve been doing."

Minneapolis Police Chief Brian O`Hara said local police would continue to monitor demonstrations in the city.

Ahead of the protests, Attorney General Pam Bondi warned protesters in Minneapolis not to cross a "red line."

"MINNESOTA: Peacefully protesting is a sacred American right protected by the First Amendment," Bondi wrote in a post on the social media platform X. "Obstructing, impeding, or attacking federal law enforcement is a federal crime. So is damaging federal property. If you cross that red line, you will be arrested and prosecuted. Do not test our resolve."