Why Then, Do We Still Hear About Attacks?
Well the answer is quite simple.
A dog is only a dog, it is not smart enough to realize the consequences of it's actions, therefore it relies on the guidance of it's owner. When an owner teaches, or fails to teach, the dog is going to react "reflexively" or "instinctively". A dog is ONLY what it's owner makes of it, and punishing an entire breed because of the act of a few mistreated dogs is not going to solve anything.
If you want to make an impact in your community, you need to work on the problem, which is not a few dogs, it's the lousy owners of these dogs. Right now you may want to ban a particular breed, and let's just say it happens. Do you think that will be the end of dog attacks? No, it won't be. Those same people breeding and raising APBTs without regards to temperament or character will go and get another breed. Are you going to try and ban that breed then too?
You need to make it so the people raising dogs badly cannot own dogs. And you need to educate. Teach people how to act around dogs, teach owners how to raise dogs, teach breeders how to select proper homes and breeding programs, teach children that dogs are not toys to be abused.
Do this, and you will have found the solution to your problem. Do it not, and you will have to ban every dog until there is none left.