Activist pranksters have placed fake "Speed Enforced By Drones" San Francisco-area highways. Worried about law enforcement drones? Some unknown activists have your back. Mystery "Speed Enforced By Drones" have started popping up highways in the Bay Area. According to a KPIX 5 news report, the were placed one highway using tamper-resistent bolts. The show a weaponized drone firing a missile.Read Full Story