"No Kings" demonstrators crowd streets, parks and plazas across the US. Organizers say millions came

Masses of demonstrators packed into streets, parks, and plazas across the United States on Saturday to protest President Donald Trump, marching through downtowns and small towns, blaring anti-authoritarian chants mixed with support for protecting democracy and immigrant rights.

- by Marc Levy, Claudia Lauer and Jim Vertuno

Organizers of the "No Kings" demonstrations said millions had marched in hundreds of events. Governors across the U.S. had urged calm and vowed no tolerance for violence, while some mobilized the National Guard ahead of marchers gathering.

Confrontations were isolated. But police in Los Angeles, where protests over federal immigration enforcement raids erupted a week earlier and sparked demonstrations across the country, used tear gas and crowd-control munitions to clear out protesters after the formal event ended. Officers in Portland also fired tear gas and projectiles to disperse a crowd that protested in front of a U.S. Immigration and Customs Enforcement building well into the evening.

And in Salt Lake City, Utah, police were investigating a shooting during a march downtown that left one person critically injured. Three people were taken into custody, including a man believed to be the shooter, who also suffered a gunshot wound, according to Police Chief Brian Redd.

Redd said it was too early to tell if the shooting was politically motivated and whether those involved knew each other. The shooter appeared to be walking alongside the group of thousands who were marching, he added. Video feeds showed demonstrators running for safety as gunshots rang out.

Huge, boisterous crowds marched, danced, drummed, and chanted shoulder-to-shoulder in New York, Denver, Chicago, Austin, and Los Angeles, some behind "no kings" banners. Atlanta's 5,000-capacity event quickly reached its limit, with thousands more gathered outside barriers to hear speakers in front of the state Capitol. Officials in Seattle estimated that more than 70,000 people attended the city's largest rally downtown, the Seattle Times reported.