I think the reason for the over-reaction on the gun safety thing here is because there are simply too many people in America who have never handled a gun, shot one, or been taught how to use them properly. I know that when I first saw the photo, my reaction was to wonder about the safety of it. But if you own the gun legally, then you have a pistol permit, and that implies that you took a safety course on how to handle guns. If you own the gun illegally, and are posting a photo of it online, then you're just stupid.
I've been shooting since I was 4, and not many days go by when I don't at least pull out my .22 and put a few rounds into a pop can. Shooting is one of the best and most useful skills to learn, and a great hobby. But there are simply too many idiots out there who don't respect how dangerous firearms are.