Well that sucks. I dont know about you guys, but i visually verify the chamber.I'm sure the fearmongerers will try to use this to their advantage.
This is an example of what can happen with posted places. The article does not state it but I would bet the permit holder was getting ready to go into a business that was posted. The negligent discharge happened when he was working to secure his firearm in accordance with the law.Yes the permit holder made a mistake, but it was a mistake that would not have happened if the gun could have stayed safely inside it's holster.
I can't think of any reason why he would have needed to pull the trigger, unless he was disassembling it for some reason. Negligent discharges do happen, but there is no excuse for pulling the trigger if you are just unloading.
Properly or improperly he got the gun unloaded.