Tens of thousands of demonstrators took to the streets across Southern California on Saturday to voice their concerns over ongoing immigration raids and oppose the policies of President Trump, who they depicted as an aspiring monarch.

Riots in Los Angeles resulted in 10 deputies being injured by rocks, Molotov cocktails and pyrotechnics as law enforcement prepares for planned nationwide protests Saturday.

Republicans and Democrats on Capitol Hill and across the country remain divided following protests against Trump's deportation policies.

The protest comes before leaders vote on whether or not to pass a budget that is expected to lock new undocumented immigrants out of Medi-Cal.

The city acknowledged that the change could make it more difficult for some families to visit detained loved ones.

Some vehicles thought be those of agents were spray-painted with expletives, as were some exterior walls of the Whittier hotel.

Organisers said hundreds of demonstrations were held in a day of defiance to counter a huge military parade hosted by Trump.