Los Angeles police have swiftly enforced a downtown curfew, making arrests moments after it took effect, deploying officers on horseback and using crowd control projectiles to break up a group of hundreds demonstrating against President Donald Trump’s immigration crackdown.

The mayor said the curfew will run from 8 p.m. to 6 a.m. local time, and cover roughly a square mile of downtown. She said she expects it to last several days.

Anti-ICE protests continue in Los Angeles after the National Guard was deployed following immigration enforcement actions.

4:56 p.m. EDT U.S. District Judge Charles Breyer turned down Newsom’s request for an emergency ruling that would have blocked federal troop deployment in Los Angeles, giving Trump until Wednesday at 2 p.m. EDT to file a response to Newsom’s lawsuit (Newsom can file his response to Trump by Thursday at 12 p.m. EDT).

From Seattle and Austin to Chicago and Washington, D.C., marchers have chanted slogans, carried signs against ICE and snarled traffic through downtown avenues and outside federal offices.

LOS ANGELES (AP) — Police detained a CNN correspondent and crew reporting on protests against immigration raids in Los Angeles, calling into question whether law enforcement has been targeting journalists trying to cover the demonstrations after two other journalists were hit by rubber bullets.

The White House and Republican leaders in Congress are calling for quick passage of the centerpiece of President Trump's legislative agenda.