Rules? Sure, I absolutely agree. Coderre's ban was overdoing it however. Forbidding purchase of all these breeds in lieu of merely enforcing the new muzzle, leash, oversight and permit rules is ridiculous.
My sister fostered and sheltered abandoned and abused pitbulls for years before having kids and nothing ever happened - however, like any strong dog they owned, they were in the backyard with a solid fence and there was a lock on it to ensure kids didn't just walk in their backyard to pet the dog.
Bad or ignorant owners, as well as idiotic people who think it's ok to just walk up to people and pet their dog out of nowhere or from the back, are the main reason these things happen.
Montreal has way more serious problems to solve yet let's focus on stuff like that so people forget about the real issues for a bit.