A pickup truck hit a protester Thursday night in Hollywood, California, and moments later a second vehicle hit a car participating in the same protest as it tried to leave the area, according to the Los Angeles Police Department.

The “largely peaceful” group of protesters began marching around 7 p.m. local time with only isolated reports of vandalism, but shortly after 9 p.m., things turned violent when a blue pickup truck traveling on Sunset Boulevard maneuvered through the crowd and became involved in an altercation, according to authorities. The driver of the truck attempted to get away from the situation, but police said he struck a protester standing in the street.