Protests rage outside Trump rally in Orange County; 17 arrested, police car smashed

The L.A. Times reports:

Hundreds of demonstrators filled the street outside the Orange County amphitheater where Donald Trump held a rally Thursday night, stomping on cars, hurling rocks at motorists and forcefully declaring their opposition to the Republican presidential candidate.

Traffic came to a halt as a boisterous crowd walked in the roadway, some waving American and Mexican flags. Protesters smashed a window on at least one police cruiser, punctured the tires of a police sport utility vehicle, and at one point tried to flip a police car.

"Dump the Trump," said one sign. Another protester scrawled anti-Trump messages onto Costa Mesa police cruisers.

"I'm protesting because I want equal rights for everybody, and I want peaceful protest," said 19-year-old Daniel Lujan, one of hundreds in a crowd that appeared to be mostly Latinos in their late teens and 20s.

"I knew this was going to happen," Lujan added. "It was going to be a riot. He deserves what he gets."

Why are the anti-Trump protesters so violent?