Seven Sonoma County residents have been arrested on suspicion of organizing and promoting illegal sideshows last July. The suspects, arrested Tuesday, range between the ages of 17 and 32-years-old. Police are still looking for an additional seven suspects. The sideshows that happened on July 9th and 10th involved an estimated 300 vehicles. Police say the group tried to take over five intersections in Santa Rosa. The suspects are accused of vandalism, conspiracy to commit crimes and waterway pollution. Police attribute the last crime to damaged tires ending up in local water systems.