I like big arguments!
Then again, if you believe that banning weapons will automatically reduce violent crime, think again.
There's the loophole of "improper weapons", which could include almost anything ranging from sticks to a stone picked up from the ground, and may include even a bunch of chemicals that, apart, are harmless, but concocted together form a weapon or a poison.
Criminals will even use a shepherd's staff, if that's what's available to them (article in Greek, but with the powers of Google Translate, this shouldn't be a problem).
Edit: the concept of improper weapon actually exists in Italian law (It. wiki article), I don't know what the closest Common Law equivalent is. In any case, Italian law differentiates between proper weapons (those that ARE weapons by design and main purpose) and improper ones, which are objects that have a different primary use. Most knives, sticks, bludgeons, pipes, pointed instruments etc. are also improper weapons. Stuff like explosives and chemical/bacteriological agents are also considered a "real" weapon, even if using e.g. a stick of dynamite or a canister of mustard gas isn't as easy as shooting a gun of beating someone to death with a lead pipe.
Then again, there are some objects that are in a grey area between the two, e.g. powder nail guns which are little more than a gun in disguide (and, in fact, are illegal in some jurisdictions).
Last edited by Maes on 12-22-12 at 00:09