Breed specific legislation is turning out to be unhelpful in addressing the problems described here. Accurate identification of a legislated breed is almost impossible without DNA testing (can you spot the pit bull?
http://www.mabbr.org/legislation4.html ) and US cities are finding enforcement costs prohibitive.
Most dogs on the island are a mix of several breeds; how much of the "bad" breed should be required for the rule to apply? Who's qualified to say what breed a dog is? A vet at UC Davis told us greater than 80% of the 1000's of dogs they've DNA tested had some % of pit DNA.
No breed is inherently aggressive but any dog can become aggressive/mean if mistreated or neglected. Rules should apply to all dog owners, not specific dog breeds.