ICE activity continues after protest across Southern California

An unlawful assembly was declared in downtown Los Angeles due to demonstrators throwing bottles, rocks and other objects at officers, the Los Angeles Police Department's Deputy Chief Emada Tingirides said.

"We started off with 20 to 30,000 participants at its peak and the protest was peaceful," Tingirides said. "Not until rocks and bottles and projectiles were being thrown at our officers did we initiate crowd control tactics in an effort to bring peace and calmness in that area and protect the children and families and protesters that were there to express the first amendment."

The dispersal order was issued just before 4 p.m. after a crowd in the 300 block of Los Angeles Street began blocking traffic.They had a position of advantage and began throwing objects at the officers.

That is when the incident commander declared an unlawful assembly. LAPD administered less lethal and the crowd began to disperse.

Tingirides said LAPD carried out crowd control tactics alongside the Los Angeles Sheriff's Department in an effort to gain compliance from the group that ignored the initial dispersal order.

An unlawful assembly was declared in downtown Los Angeles due to demonstrators throwing objects at officers, LAPD's Deputy Chief said.

There were two occasions where LAFD had to go in and render aid to individuals, but when crowds don't disperse, it makes it difficult for them to do their job, she said.

The LAPD is fully mobilized, meaning days off were canceled for officers. With their partnership with the LASD and CHP, LAPD said they have enough resources to mitigate the crowd.

When asked if the 8 p.m. curfew was working, Tingirides said yes.

"Once the mayor initiated this curfew, we have seen a decrease in burglaries and looting," she said. "In fact, we have not had one burglary or looting incident in four days since the mayor instituted the curfew in the downtown L.A. area."

Ahead of the planned curfew set to go into effect at 8 p.m., LAPD is asking all demonstrators to leave the Civic Center area in downtown.

Shortly before the request, the LAPD said officers had requested assistance due to "agitators" throwing objects at officers.

Earlier, a dispersal order had been issued for an area of downtown after the LAPD said people in the crowd were throwing rocks, bricks and bottles.

ABC News contributed to this report.

A "No Kings Day" protest kicked off Saturday afternoon in downtown Riverside and remained mostly peaceful.

Police in Riverside said there were no signs of any violence, only a large crowd.

About 200 people showed up at an anti-ICE protest on Friday and was met with a counter protest.

No injuries or arrests have been reported.

Thousands of "No Kings Day" protests are being held across the U.S. on Saturday to protest the Trump administration and to counterprogram the military parade in Washington, D.C.

Los Angeles County Sheriff deputies were seen throwing multiple flash bangs into the crowd in downtown Los Angeles in an effort to get them to disperse.

Deputies were also throwing out tear gas.

The crowd seemed to stay put despite LAPD's dispersal order that was issued just before 4 p.m., but once deputies began to use these methods about two hours after the order, demonstrators began to clear out.

The LAPD alleged on X that protesters at Temple and Spring streets threw "concrete, rocks, bottles and commercial grade fireworks at officers."

Protesters and media were advised to leave that area.

Los Angeles County Sheriff deputies were seen throwing multiple flash bangs into the crowd in an effort to get them to disperse.

ABC News contributed to this report.