We all should make a concerted effort to instill and enforce gun safety whenever we can. Sometimes simple teaching is required, sometimes something a little more rigorous might be needed.
Back many years ago when the "Hunter Safety" program became a requirement here for young people to go hunting, and many, many young folks were clamoring to get into a class, one of the very first things I would say to a new, first day class was what the safety rules were. I then explained to them why they were so very important, and that with as many folks needing to get into classes as there were, there would be no 2nd warnings.
Over about 16 years we did classes of from 12 (smallest) to as many as 72 (largest). In a short time we realized that those who were sent home for a gun safety infraction during their class, would come back for a second class and they began spreading the word that "Mr. Joe's instructors don't mess around regarding safety". Now it didn't happen often that we had to send someone home without his/her certification, in fact it was pretty rare. But ...............................
We all reinforced the safety aspect of the entire class throughout the entire class, even to the point of having the students wear a 'hunter orange' vest throughout the class. I was amazed at just how careful most of those kids were once they realized just how serious we were about safety. Many of the parents, grandparents, uncles, etc that came with the kids often made comments about how impressed they were at the impact we made on those kids. It was very obvious that our insistence on safety was understood by those kids because we were insistent that it be understood. Had we given them a lackadaisical attitude about safety, that's exactly the attitude they would have left our class with.
Even today, I still occasionally get letters, emails and such from some of those kids (well they're no longer kids) sharing with me some of their hunting experiences. And they almost never fail to mention just how much that 'Hunter Safety' class meant to them way back when. It's still a requirement for kids today to get their hunting license, but now it's an online course for most of it. I hate that and will always feel it's a slight to today's kids who do it online and miss out on the personal, one on one experiences they had with my dedicated instructors. There's just no way that an online course can project the real world seriousness of gun safety as well as a live body who truly cared for those kids, and gave the best they had to teach them.