Los Angeles police swiftly enforced a downtown curfew Tuesday night, making arrests moments after it took effect, while deploying officers on horseback.

By Brad Brooks, Phil Stewart, Idrees Ali and Dietrich KnauthLOS ANGELES (Reuters) -Several U.S. cities braced for protests on Wednesday against President Donald Trump's sweeping immigration raids, as parts of the country's second largest city Los Angeles spent the night under curfew in an effort to quell five days of unrest.

Meanwhile, Governor Gavin Newsom asked a court to put an emergency stop to the military helping federal immigration agents, with some guardsmen now standing in protection around agents as they carried out arrests.