This is a very unsettling situation. Hovering above a residence is something I almost never do. In fact, given the rural nature of most places I fly, I almost never fly directly over any building not part of my mission. Nobody on the ground even knows I'm in the area as a rule, which is exactly my intention. I would be curious to know more about the flight path as it related to the residence depicted in your video excerpt. If you heard gunshots, it must have been fairly close, yes? I'm thinking the pistol was a .22lr based on the minimal muzzle flash and recoil.
As for firearms, I'm a long-time firearms instructor, range safety officer, gunsmith, and competitor. I am a kind and compassionate person and the last thing I would ever want to do is hurt or intimidate anyone. Sadly, I've also witnessed terrible violence in my lifetime and I simply will not be a victim, nor will I allow harm to come to an innocent. But...with great power comes great responsibility and I tell students that they risk everything by merely displaying or even mentioning the fact they are armed, let alone actually drawing a weapon...or firing it. One small mistake can change your life forever.
So while I support the right to armed self-defense, I would urge anyone considering it to take responsibility by first determining whether you honestly have the physical strength, the mental acuity, the maturity, and the self-discipline to train for and maintain the skills associated with the use of deadly force. I've refused students that I felt did not meet these requirements.
For the record, I am armed at all times. I am not fearful, nor am I quick to anger. I am however prepared for the unthinkable but with the fervent hope it never happens.