More than 2,000 "No Kings Day" protests were held on Saturday, organizers said.
Saturday marks the first full day of Marines on duty in Los Angeles, one week after protests against Immigration and Customs Enforcement raids ignited in LA and spread to other cities across the U.S., including New York City, San Francisco, Boston, and Austin, Texas.
Meanwhile, more than 2,000 "No Kings Day" protests were held across the U.S. on Saturday to protest the Trump administration and to counterprogram the military parade in Washington, D.C., organizers said. More than 5 million people participated, according to organizers.
The demonstrations remained peaceful in almost all cities, but as the evening grew in Los Angeles, tensions escalated between police and protesters.
A 21-year-old man allegedly accelerated his SUV into a crowd of people at a "No Kings Day" rally in Virginia, hitting at least one person, according to Culpeper police.
No injuries were reported, police said.
Joseph Checklick Jr. was arrested for reckless driving and may face additional charges, police said.
-ABC News' Beatrice Peterson
Protestors wearing shirts reading "make out not war" climbed on top of a military vehicle ahead of the Army parade.
Minnesota Gov. Tim Walz warned that Minnesotans should not attend any political rallies in the state until the gunman who killed a state lawmaker and wounded another lawmaker early Saturday is caught.
Fliers reading "No Kings" were found in the suspect's car, authorities said. Thousands of "No Kings Day" protests are set to be held across the U.S. on Saturday to protest Trump's administration and to counterprogram the military parade in Washington, D.C.
No Kings events have now been canceled across Minnesota on Saturday.
The curfew in a part of downtown Los Angeles will remain in effect Saturday night as multiple protests are expected in the city, LA Mayor Bass said.
"Hundreds of additional personnel are mobilized and proactively positioned to keep people safe and to protect property,” she said.
She said Friday’s protests were peaceful with very few arrests.
"We have zero tolerance for anyone who damages property or puts officers or people at risk," Bass stressed, pleading, "Please, please do not give the administration an excuse to intervene. Let's make sure we show the world the best of Los Angeles, and our country."
LAPD Chief Jim McDonnell added, "If you're here in Los Angeles today to make your voice heard through peaceful demonstrations, we are here to protect you. But if you come with the intent to commit crime, damage property or harm others, including our officers, you will be arrested. ... We're asking everyone who plans to participate in today's events to do so peacefully and respectfully."
Since June 7, the LAPD said it's made 523 arrests related to protest activity.
-ABC News’ Amanda Morris
