This is one of the latest device promising to protect the world from the impending drone takeover. An operator targets the drone and fires a canister that contains a large net that gets tangled in the drone’s rotors. A parachute then delivers the drone back to earth in a civilized manner.
http://techcrunch.com/2016/03/04/the-skywall-100-bazooka-captures-drones-with-a-giant-net/