Violence broke out at a pro-Donald Trump rally in Huntington Beach, California, on March 25 (video below).
About 2,000 people attended the "Make America Great Again" march at a state beach, with many wearing MAGA hats or carrying American flags, The Orange County Register reports.
Of the group, about 30 people were protesting against President Trump. About a dozen of the protesters wore black masks and formed a wall blocking the pro-Trump demonstrators on a nearby bike path.
There was a great deal of yelling, shoving, pushing and punching, and some protesters pepper-sprayed a group of marchers.
Trump supporters punched and kicked at least one black-masked man who had pepper spray, according to the Los Angeles Times. Trump supporters chased the man away; he jumped over a fence and ran along Pacific Coast Highway. California Highway Patrol officers detained him shortly after.
A video of the attack on the man with pepper spray shows the demonstrators beating him on the beach.
Travis Guenther's wife was one of the people who was pepper sprayed, and he chased and hit the man with a flag that said, "Trump, Make America Great Again."
"I hit him five times with the flag over his head," he said.
When the man was detained by law enforcement officials, Guenther yelled at him, "How is your head?"
Guenther said that the Trump supporters are not xenophobic or racist, "just proud Americans."
Jennifer Sterling, who organized the march, was also hit with pepper spray, but was unfazed by the incident. She said the march was not solely to show support for Trump, but was also a patriotic rally, celebrating first responders, military veterans, the vice president and the president.
"I'm not just here in support of Trump, but our vets, military, police officers and emergency responders," fellow organizer Darlene Savord told The Orange County Register.
Savord later called the event "a huge, huge success," dismissing the violence that occurred.
"We had a lot of Trump supporters here, which shows that we are united," she said.
Police arrested four protesters at the march, California State Parks Police Captain Kevin Pearsall said.
The march in Huntington Beach was part of a nationwide effort to hold pro-Trump demonstrations in about 40 cities across 33 states. In Los Angeles, 100 Trump supporters marched down Hollywood Boulevard to rally around Trump's Hollywood Walk of Fame star. One demonstrator kneeled down and kissed it.
Pro-Trump marches also took place in Philadelphia, Pennsylvania, Jersey Shore, New Jersey, Lubbock, Texas, and Phoenix, Arizona.