Police do not need warrants to use drones:
Police can use drones to respond to 100 percent of 911 calls
Police use drones 'to get more information about emergency (911) calls'
Police use drones to 'map' traffic intersections and surveil public buildings
Police use drones to monitor protesters (revealing pro-police comments)
Police "Robotics Division" uses drones to monitor public events
Police use drones to listen to protesters conversations
Austin Police Drone Robotics Unit (monitor protests and car clubs)
Police Want To Keep "Austin Car Club" Spying Top Secret (approx. 4:45)
