I don't agree with banning any breed of dog. Any dog can bite. My brother was bit on the face by a cockerspaniel. My inlaw's golden retriever bit a child on the face.
My mom and dad have a pitbull. They've had her since she was a pup. I thought she was the cutest dog ever. I don't think she was socialized like she needed to be. Once when my parents went to visit my aunt and uncle (who also owned a pit) my parent's dog jumped out of their van and bolted for my aunt and uncle's dog and literally chomped on it's neck. Both my 6ft 250lb uncle and my dad couldn't get her off the dog. It was really scary. THe dog survived but had to get stiches. Ever since then I've been kind of scared of her. I know she attacked a dog and not a person but when a dog shows aggression like that for no reason it freaks me out. When we visit my parents I always make them put a muzzle on her when my dd is around. I'm not taking any chances. My mom always pitys the dog saying "oh I know it's not nice to wear that thing but everyone's afraid 'cause you're a pitbull". I told her that I'm not afraid that she's a pitpull, it's the fact that it has attacked another animal and I don't want to risk my child getting bit.