"It was unbelievable," said Steve Tong, a Cupertino resident who attended the Trump rally.
Tong said after the rally, he was walking toward a nearby parking structure and saw protesters surrounding and taunting an elderly couple.
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"I've never seen anything like that in America before," Tong said.
Tong also said he saw protesters smash car windows inside the parking structure.
The San Jose Police Department said there were a few arrests made, but it did not provide specific numbers or information on those arrests. There was no significant property damage reported. One officer was assaulted, police said.
"Our police officers have done an extremely courageous and professional job so far," San Jose Mayor Sam Liccardo told The Associated Press by phone. "We're all still holding our breath to see the outcome of this dangerous and explosive situation."
Clinton: Trump Shouldn't Have Nuke CodesWhile speaking in San Diego on June 2, 2016, Democratic presidential candidate Hillary Clinton described Donald Trump’s foreign policy ideas as a series of “bizarre rants, personal feuds and outright lies.” (Published Thursday, June 2, 2016)
The mayor, a Democrat and Hillary Clinton supporter, criticized Trump for coming to cities and igniting problems that local police departments had to deal with.
"At some point Donald Trump needs to take responsibility for the irresponsible behavior of his campaign," Liccardo said.
Such protests are unlikely to be repeated on Friday when Trump holds a rally at the airport in the much smaller and more conservative city of Redding about 150 miles north of Sacramento.
Adam Rivas, a 22-year-old community college student who was born and raised in San Jose, was holding a spray-painted sign that read "Dump Trump" on Thursday.
Violent Protests Break Out at Trump Campaign Rally in NMProtests outside a Donald Trump campaign rally in Albuquerque, New Mexico, turned violent on Tuesday night. Demonstrators threw burning T-shirts and other objects at police as their focus shifted from Trump to the Albuquerque Police Department. (Published Wednesday, May 25, 2016)
Rivas said he was particularly disturbed by Trump's remarks about Mexicans.
"For any one Mexican here he bashes, there are about 20 Mexicans out there who are hardworking and just doing their job,'' he said.
It's not only supporters attending the inside of the rally. Mike Kennedy, who works in development and lives in nearby Los Gatos said as he walked in that he "came to see the spectacle, and see Trump's minions.''
Trump's appearance in Sacramento Wednesday night drew a very small group of protesters that was dwarfed by thousands of supporters. But California campaign rallies last week saw some clashes between protesters, supporters and police that led to several arrests.
Donald Trump Holds Campaign Rally in San Jose
During the rally at South Hall, an annex of the San Jose Convention Center, Trump addressed about 5,000 supporters in attendance.
Trump discussed Democratic presidential candidates Hillary Clinton and Bernie Sanders. He called Clinton "pathetic" and accused Sanders of "rigging the system."
The Republican presidential candidate also continued his stance on toughening immigration laws.
"We're going to bring people into this county, but we're going to bring them in legally," Trump said.
17 Arrested at Trump Rally ProtestSeventeen people were arrested in a protest outside a rally for Republican presidential front-runner Donald Trump in Costa Mesa. Toni Guinyard reports for Today in LA on Friday April 29, 2016. (Published Friday, April 29, 2016)
Due to security concerns, a handful of roads surrounding the convention center have been closed down, which already created a midday backup in downtown San Jose.
His appearance, like the last time around on April 29, prompted a heavy police presence, and sources say the San Jose Police Department asked officers to volunteer to work overtime for Thursday's rally.
Trump Clinches 'Magic Number' for GOP NominationDonald Trump has secured the number of delegates required to clinch the GOP nomination. (Published Thursday, May 26, 2016)
According to his calendar, Trump has no scheduled stops in Oakland, a city he declared to a New York Times Magazine reporter was among the “most dangerous” in the world.
All of us, every single man, woman, and child on the face of the Earth were born with the same unalienable rights; to life, liberty and the pursuit of happiness. And, if the governments of the world can't get that through their thick skulls, then, regime change will be necessary.
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IBA Quote of the Week.
"We are looking forward to the day when moderate Muslims will be able to take control of their governments, their educational systems, and their law and order, so the Western world could resume mutual constructive relations based on friendship and respect. The whole world is looking forward to that day and praying for a peaceful Middle East. The ball is now in the Muslim world's court."
-- President Elect Donald J. Trump
"An Islamic regime must be serious in every field," explained Ayatollah Khomeini. "There are no jokes in Islam. There is no humour in Islam. There is no fun in Islam."
"I want to be very, very clear, however: I understand and agree with the analysis of the problem. There is an imminent threat. It manifested itself on 9/11. It's real and grave. It is as serious a threat as Stalinism and National Socialism were. Let's not pretend it isn't." ~~~~~Bono~~~~~