Your devotion to loving and protecting canines is amiable in many respects, but you may consider that some dogs are much more likely to kill or maim others, people, or others based on their linage and upbringing.
I wish the woman who kept two pitbulls had listened to the fears she no doubt kept buried in her heart when the cuddly critters acted as occasional brutes.
The line between nature and domestication is not one that anyone wants to see broken in a dog like that, and to be honest, I do not want that 30 pound dog locked around my Achilles tendon.
Let alone his much, much larger brothers.
We have to make some distractions here, having certain dogs who do have a lineage to kill, maim, or otherwise wreak havoc when out of control, need to have more controls per weight, breed, and anything else we can reasonably establish as dangerous in most cases.
We should all be able to get behind some clear minded regulations and penalties for the irresponsible, that will also help the image of the responsible and of the dogs if the killings and maimings are reduced.