I helped someone out with this myself, a few weeks back.
It was a slow Sunday afternoon, and I was at the station, typing up a slew of burglary reports that I had unfortunately managed to collect. A call to assist someone in the lobby came out over the radio for another officer, and I decided to take the call since he was nowhere near the station. Doing that is a nice thing, but kind of a crapshoot; about 2/3ds of the time, it is a simple matter that can be handled by five or ten minutes of conversation. Sometimes its a two hour report call.
It turned out that a single, professional mother and her 9 year old son had just seen an alarmist news special on one of the cable news outlets about the "dangers" of firearms. Her son was developing, to her, what seemed to be an "unhealthy" interest in weapons. To deal with this, since she had no real knowledge of firearms, she decided to go to local law enforcement, who obviously have some kind of knowledge of firearms safety, since we walk around with pistols all day and aren't shooting ourselves all the time.
After hearing her problem, mom, junior and I sat down for about a 20 minute lecture on firearms safety, wound ballistics (punctuated by a rather unamusing story from MY childhood and the accompanying scars) and safe weapons handling. I also blatantly plagiarized the "Eddie Eagle" campaign and printed the youngster a list of basic firearms safety rules from a training course I have been working on.
After much, much prompting and begging from mom(and a lot of reluctance on my part) I let the youngster handle a safe and cleared pistol. The safety lessons apparently stuck, because when mom was manipulating the weapon and the muzzle inadvertently drifted in the direction of my leg, he chided her for a "Rule 1" violation.
When they parted, mom had decided to get junior into one of the local scout troops that had some basic marksmanship programs. Junior had also agreed to immediately call 911 if any of his friends did any unsafe firearms handling.
All in all, a couple of new converts and a good day for gun-ownership, at least in my neck of the woods. It also shows, that like in most other interpersonal interactions, common sense and calm communications skills can make a lot more of an impact than shrill cries and wailing.