Waving primarily Mexican flags, more than 1,000 people turned out for an anti-Trump rally on Friday in San Diego, a city on the U.S.-Mexico border. Presumptive GOP nominee Donald Trump was giving a speech at the San Diego Convention Center About a third of the city’s population is Latino, as were a majority of the protesters who decried against Trump’s stance on illegal immigration.

Protesters on Friday afternoon attempted to breach a barrier held by police, climbing over railings and throwing objects at officers, who used their night sticks in an attempt to counter back the crowd. At least three arrests were made. This comes days after the chaotic riots in Anaheim.