Hundreds of demonstrators jostled with police in riot gear outside a California hotel where Republican presidential frontrunner Donald Trump gave a speech, forcing the candidate to duck into a back entrance. "We went under a fence and through a fence".
"I recognise that many in the media would love to see me surrender to Donald Trump because that means that Hillary wins".
He has accused Mexico of sending drug dealers and rapists across the USA border, and promised to end it by building a wall and making Mexico pay for it. Chaotic scenes broke out yesterday outside a Trump rally at the county fair grounds in Costa Mesa, California.
Numerous protesters were angry over Trump's stance on immigration. "Would I win - could I win - without it? He's for America and business", said Gilbert, 71, of Woodside.
That wasn't always a certainty when some in the national party were angling for a broken convention to prevent a Donald Trump nomination.
Police had their hands full keeping the anti-Trump crowd from storming the hotel, resulting in several physical altercations, including shoving, between protesters and police officers, CNN reported.
Meanwhile, Trump in an attempt to elude protestors, was seen walking along and crossing a fence surrounded by his security personnel.
But questions persist in the party - nationally and in California - about Trump's electability in the fall and his conservative credentials.
Cruz might also be helped by big-tent Republicans trying to stop Trump. "If you're a Republican running for president in California and you don't get protested, you're doing something really, really wrong", Jim Brulte, chairman of the California Republican Party, said on CNN on Friday.
He'll likely make many visits to California in coming weeks.
Earlier this week, a Trump rally in nearby Anaheim turned contentious when his supporters and protesters clashed, and several people were hit by pepper spray. One news photographer captured a man wearing a Trump T-shirt whose face had been bloodied.
Prostesters demonstrate at Donald Trump rally at The Pacific Amphitheatre in Costa Mesa, Calif., on Thursday. The California platform endorses free markets; Trump has long criticized USA trade policy and advocated steep tariffs on Chinese goods.
The change of subject reflects Trump's conviction that the race for the Republican presidential nomination is essentially "over", with GOP rivals Ted Cruz and John Kasich unable to catch up to Trump's delegate haul - but Trump himself is short of the 1,237 delegates required to clinch the nomination.
That's despite the fact that delegates don't have an obligation to vote for the state's victor past the first ballot.
Trump's main rival, Senator Ted Cruz, on April 29 picked up the backing of Governor Mike Pence of IN in a rearguard battle to damage Trump's chances.
"The Trump camp, while they're organized, I think some of their guys just don't have the institutional knowledge that some of the folks that are in the Cruz orbit have", the Party source said.
"I think the support we are seeing is surging", Cruz said.
Each candidate has a chance to get three delegates for every congressional district won in California and volunteers at each of the campaign booths worked to bring undecided voters on board