Yes I understand I am so sorry your in this situation it's very sad The APBT in general is a human friendly dog they don't get along with other dogs but they were never bred to be human aggressive. Many of the attacks that happen are from mixed breeds/pitbull type breeds or unstable dogs(that the owner should have PTS) that were a result of bad breeding practices.
The only thing I could suggest is that you get your vet to write up something saying the dog you own is something other than what it appears to look like a pit or pit/mix. I don't know if you have a vet you are very close with that would do this for you. Otherwise my last suggestion would be to move from the area that the breed is banned. I am not sure if that is an option for you but if they ban all pitbulls or like breeds your not going to have a choice without some sort of documentation stating your dog is NOT a pitbull/related mix .