This breed has been over looked in so many shelters, mainly due to negative media, I have been in rescue and have seen some shelter pitbulls turn into some of the best Family Pets, have seen them overcome so much bad in their pasts.
Alderman Fioretti, all we ask is that you reconsider, and do not ban pitbulls in Chicago, that would mean Families losing their loyal pet (if they can not move) and it isn't a nice sweet euthanasia like when a pet is sick, it is carried out by a person who does this like an assembly line, some pets suffer and take time to die, is this the way we treat our family pets? NO! 
Think of all the families who won't be able to save their pets, I know being a home owner I could not up and sell my home to save my pet, (would probably consider it) with laws like this being passed. But back to the real reason, why not put a longer jail sentence on the people who train and fight dogs? Why do the dogs have to pay for a humans bad intentions?
Remember the Ex-Chicago Police Officer Who Lost his Service Pitbull? These dogs are very intelligent, and can be amazing pets, don't condemn them all for what ignorant people do to them. 
Please Don't Ban the Breed We Love so Much !