This story got me thinking that it would be worthwhile to legally define "warning shot" and make exceptions for it.
I mean the laws are already stupidly complex, why not add something else? It ~is~ possible to fire a weapon in a safe way even in a fairly densely populated area. Most warning shots are illegal because discharging a firearm in that place is just blanket illegal. If a warning shot was legally defined and exempted from negligent discharge laws then there is a legal pathway to defending yourself without having to shoot to kill.
While that may not be the best idea to start with, I'm more and more of the mind that if gun owners don't start legally defining and defending what their rights are they will continue to be defined by the anti-gunners and chipped away as they have been nearly 100 years.
Besides the safety issue, warning shots are not a good idea in self-defense situations for 2 reasons:
First, any shot not put into a threat is one less for that purpose.
Second, in court you are going to claim that you were in fear of your life, that's why you fired. The prosecutor will say something like:
P: So, you were in fear of your life?
U: yes
P: and you have been trained to shoot to stop a threat when you are in fear of your life, correct?
U: yes
P: So, if you were in fear of your life, and your training was to shoot to stop the threat, why did you fire a warning shot?
U: Ummmm........
P: So, Mr. Jones, you weren't really in fear of your life, right? Otherwise you would have just shot Mr. Bad Guy, Right? Weren't you really just trying to scare Mr. Bad Guy and you really weren't afraid for your life, correct?
U: Hmmmmmmm......
P: Admit it Mr. Jones, you were the aggressor weren't you? You tried to use your big, scary gun to intimidate and scare Mr. Bad Guy, who, in reality, was minding his own business and heading off to his church to teach Sunday school.
U: Ahhhhhhhh......