I keep hearing about these threats, but have yet to see or hear them. My response would have being to watch them and if they did not come unto my property ( like in this case ) i would have done nothing. What i would not have done is leave the relative safety of my house, and start waving and pointing a firearm at people that at that stage were just walking past. Had they the right ( others will decide that ) was it the smart / sensible thing to do no. You would have difficulty finding any compliant self defence instructor, or anyone that had a clue on self defence, advising anyone to do what they did.