Salt Lake City police are investigating the roles of two self-described "peacekeepers" following a fatal shooting at Saturday's protest that left one person dead and another injured, raising questions about unauthorized security at public demonstrations.

The largely peaceful protests during the "No Kings Day" demonstration in downtown Los Angeles took an intense turn in the afternoon. Police ordered the crowd to disperse at about 4:15 p.m. PDT near Alameda Street and Temple Avenue, according to the Los Angeles Police Department's Central Division.

On the same day Melissa Hortman and her husband were murdered in a "politically-motivated" assassination, more "politically-motivated" violence occurred at peaceful protests across the country.

"The police violence was totally unprovoked and has been the worst I've ever seen it in all my years of covering protesting," said photographer Kemal Cilenigr, who documented the day's shift from peaceful to besieged.

Los Angeles Mayor Karen Bass announced that the nightly curfew will be extended for a few more days amid ongoing protests against immigration raids.

Thousands of “No Kings” protests unfolded across South Florida and the nation on June 14. Demonstrators voiced their opposition to President Donald Trump’s policies, emphasizing themes of democracy and unity amid a backdrop of political tension

In Los Angeles, 38 people were arrested downtown on Saturday night, police said Sunday. In Huntington Beach, police arrested a convicted felon they said had a loaded handgun.