Every day the rotweilers, dobermans and german shepherds of the world thank God for the pit bull. Each of those were the terror dog in their time, and each of them is no doubt thankful to be off of the list.
I can't wait to see what dog... or animal... is the next favorite of those who feel the need to keep ill-mannered dogs that are trained to attack.
Don't forget the American bulldog -- they were the terror dog of the 40s and 50s.
I have no problem with an ordinance that requires dogs to be in the house or in a secure, fenced yard, though -- but they need to enforce the ordinance for all dogs. Personally, I wouldn't even leave my dogs in our fenced yard without supervision.