Breed Specific Legislation
Public Act 093-0548 prohibits towns from enacting breed specific regulation: illinoisstatelaw
People who fight dogs:
Dog Fighting is a Class 4 felony in Illinois. While possession of dogs for fighting is also a Class 4 felony , being a spectator at a dogfight is a Class A misdemeanor.
See how Illinois ranks in addressing dog fighting as compared to other states:
http://www.hsus.org/acf/fighting/dogfight/ranking_state_dogfighting_laws.html
National Canine Research Council