As many dogs as I've handled over the years. You think that a particular breed is harmless, treat them as such and next thing you know you've got a scar for life (much like the one that aforementioned dachshund gave me).
You claim that pits are more dangerous than guns, yet you there are far fewer deaths or injuries from pit bulls, or dogs in general, than there are guns. Yes, pits have brains, but they also have upbringing and training, which, in a properly raised and trained dog overrides a dog's instincts and actions.
What has happened over the past thirty years is that pit bulls have become the bad boy dog du jour, the breed that assholes and idiots like to latch on to in order to make themselves look tough. This has happened before with German Shepards and Dobermans. I was raised with German Shepards and I remember as a kid hearing about cities and towns wanting to ban the breed. It was foolish then, it is foolish now. If you ban pits what is going to happen is that the idiots and assholes will simply move on to another breed, something in fact which is already happening. My prediction, in another ten years we'll be sitting here discussing whether or not we should outlaw Presa Canarios or some other such breed because the assholes and idiots have turned them into the bad boy dog du jour.
The reason that the AKC no longer recommends pits is indeed because of the hype. There was an article in the AKC Gazette about twenty years ago that pretty much stating that they weren't going to recommend pits anymore not because the breed had declined in their eyes, but because the hype surrounding them had made the name "pit bull" toxic. It wasn't the breed that had changed, but the public perception.
As far as the dog in the OP article goes, it sounds like two things were going on. First and foremost nobody in that family had ever truly established that they were the alpha dog. The dog perceived this and stepped into the spot. First mistake, never, ever allow your dog to think that it is the alpha. Every single dog that I get I make sure that one of the first things I do is wrestle it down to the ground, in a doggy playful way, put my jaws over its neck and growl. This is essentially doggy talk for saying "Hey, I'm the big dog here, I'm the alpha". I do this a few times and it works. You don't have to use this particular method (though I've found it is quite effective) but you absolutely have to establish who is the alpha dog, otherwise you're in for a world of trouble. It also sounds like this dog was indeed suffering from separation anxiety. First thing, you don't treat separation anxiety with drugs, that's stupid. You do treat it with training and love, and lots of chew toys. Having multiple dogs, or companion cats also helps.
Now hard head, yes, pits, along with most bully dogs, have hard heads. I watched one of my pits run into a tree at full gallop, bounce off and keep going. This toughness is actually one of the reasons why the AKC recommended them for families, because they could take the rough and tumble play of kids (Think of one of the most famous pits, Pete, from Lil Rascals). This same dog of mine that ran into a tree was wonderful with kids, letting them wrestle him around, pull his ears and tail, and the worst that he would do is lick (and yes, pits do lick, a lot). But just because they have a hard head is not a strike against them after all many breeds in the bully family have hard heads. Hell, there are even humans that have heads hard enough to take a bullet and keep coming.
As far as you Wiki evidence, well, that's one reason that I don't like using Wiki for a reference. They let almost any yahoo out there quote the most outrageous things without much if any fact checking. Merritt Cliffton is a certifiable loon when it comes to the topic of pits. Let me include this refutation of his work, expressed much more elegantly than I could
<
http://lassiegethelp.blogspot.com/2007/08/pit-bulls-dog-bite-statistics-and.html>
A couple of other things you need to know. First, the media. They just loves themselves a good juicy pitbull story, and will even make up shit if it isn't juicy enough. To them virtually any dog who bites is a pit bull and furthermore if it isn't a pitbull attack, they won't report it. Have you heard about the killer Pomeranians in the past ten years? No, I didn't think so because those two deaths (babies) were hardly reported on at all. Besides, Poms are those cute little accessory dogs and they don't get as good as copy as a good old fashioned pit bull attack.
Another thing is that people in this country have a hard time, especially under duress, identifying breeds. Thus pit bulls get blamed for a lot of attacks that are actually carried out by other breeds of dogs. Here, let me show you, take the following test <
http://www.pitbullsontheweb.com/petbull/findpit.html>
What we're doing to this breed is a crime. What's sadder is that as soon as some other breed becomes the bad boy dog du jour, we'll do the same thing. This hype is simply being used to issue breed specific bans, a horrible solution that simply won't cure the problem. What is needed is a concerted effort to educate all dog owners on how to train and live with a dog. Much of that is simple common sense, but we all know how uncommon that is.