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.

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.