Riverside County Deputy Melissa Nieburger (NEE’-bur-gur) said Sunday that the protesters were being booked at Indio Jail and released.
Hundreds of people participated in the mostly peaceful demonstration that had been arranged with authorities, but some protesters crossed the street to the Rancho Las Palmas Resort.
Deputies in riot gear arrested them without incident when they refused to leave the area.
Sunday was the second day of the four-day conclave. It was organized by billionaire brothers David and Charles Koch, who have funded the fight against global warming laws and have financial ties to tea party groups.