The 4 Laws
I. All guns are always loaded.
(My version is slightly different: ASSUME all guns are always loaded.)
II. Never let the muzzle cover anything you are not willing to destroy.
III. Keep your finger off the trigger until your sights are on the target.
IV. Be sure of your target and what is beyond it.
Oh yeah, and to add one more: JUST BECAUSE YOU HAVE DROPPED THE MAG DOES NOT MEAN THERE IS NOT A ROUND IN THE CHAMBER!
My weapon will not fire a round in the chamber if the magazine has been removed. Even so, I wouldn’t point it at someone. Just thinking of what this kid did makes me cringe.