Dozens have been arrested after clashes with officers in America's second city, with National Guard members now deployed.

Downtown Los Angeles bustled Wednesday with dog-walkers and commuters touting coffee cups, returning to business as usual after the first night of curfew meant to tamp down tensions following days of protests over President Donald Trump's immigration crackdown.

Protests have continued in the Los Angeles area since Immigration and Customs Enforcement conducted mass arrests in the area Friday.

President Trump called in the National Guard on Saturday after isolated clashes between federal law enforcement and people protesting immigration raids.

Tensions are escalating in Los Angeles after protests against Immigration and Customs Enforcement gripped the city on Sunday, with demonstrators clashing with law enforcement and setting vehicles on fire downtown.

Hours after the curfew went into effect Tuesday night, many of the protesters had dispersed, although small sporadic confrontations continued. Trump ordered the deployment of nearly 5,000 military members,

U.S. Marines will deploy to Los Angeles streets within 48 hours with authority to detain civilians, escalating federal-state tensions.

California Governor Gavin Newsom blasts the federal government's response to anti-immigration raid protests as "purposefully inflammatory".