IMHO anyone on the range has the right and responsibility to bring safety violations to the attention of the offending party. Politely. Even little ol' me can get distracted and lost in thought, especially when working up a new load, or on those days when I go to the range to blow off some steam. I'm not saying that I violate safe rules 'o the range often, just that we are all human and make mistakes once in a while. On the range some mistakes can turn darn dangerous darn quick, even deadly. At the range or in the field it's in everyone's best interests to look out for one-another, and if necessary remind one-another of the rules. Just my $.o2, FWIW.
"I like my town with a little drop of poison. No body knows,...they're all lining up to go insane. I'm all alone. I've smoked my friends down to the filter; but I feel much cleaner after it rains..."
Those convinced against their will are of the same opinion still.