A car driving through two dueling protests—a demonstration against police brutality and one supporting President Donald Trump—injured at least two people Saturday afternoon in Yorba Linda, California, authorities said. The driver was detained, and the two victims were transported to nearby hospitals in unknown conditions. Roughly 300 demonstrators gathered for the Black Lives Matter protest, an Orange County spokesperson told ABC7, and a counter-demonstration of unclear size confronted them, chanting “USA! USA! USA!” and holding Trump flags. Video from the scene shows the car amid the pro-Trump faction. Police issued a notice of an unlawful assembly, ordering the crowd to disperse.