That is horrible. My father in law is a member of the NRA and big on his right to own guns but he is also big on teaching responsibility. My wife and none of her siblings were allowed to play with guns, even make a gun out of their hand and pretend to shoot - guns were never toys with that.
Each child, when they turned 10-12 they got a gun for their birthday (usually a rifle - 22 gauge). If was locked if he wasn't supervising them with it. They had to learn all about gun saftey, how to take it apart, how to clean it, how to use it, and everything else before he even took them to the gun club to learn how to fire it.
It's not about teaching kids how to shoot, it's also teaching them the responsibility of owning a gun and the parents' responsibility to keep the kids safe.