Whenever you go into a dangerous area, you have to do what you can to maximize your chances of survival. Anything less is negligent.
Every time you go out in public...
Do you wear full IV body armor?
Do you carry a fully trauma kit, Lifepak, T&C/M blood?
Do you carry at minmum an infantry level loadout?
Do you carry IR lighting/aiming/vision/thermal imaging gear?
Do you carry sidearm and long gun able to defeat IV body armor?
Do you carry enough supplies on your person to save yourself and at least two others?
Every day at least 100 people are shot in the U.S.
Often by multiple assailants, often using "high power" rifles
Often at night or inside dark buildings or spaces
Often close friends, family, coworkers are the victims of these attacks
If you are not maximizing your chances of survival by taking the above basic steps...
Then using your own "logic" YOU are being negligent