Knives have been used as weapons. That's a clear fact and they should be considered an "arm." But it seems to me that all law leans heavily on "definitions" as defined in the law. Clearly defining a knife as an "arm" could bite us law abiding folks in the butt. There is no comparison between a knife and a pistol but if it is defined that way I see it as a problem.
The heart of the heart of the heart of the problem is widespread distrust, lack of respect and ultimately fear of ones fellow man. That is why "the sheep" support disarming you and I.
I don't like lumping knives in with guns. It's like lumping asprin in with morphine because a few people have expired from it & it could be used to do harm to ones self or others. But they are both drugs, right?
It seem obvious to me that the real disgrace, supported and caused by irrational fear, is that a POTENTIAL criminal is seen as an ACTUAL criminal by "law" based on that person having an instrument which is first and foremost a tool. It is a blanket statement saying "People are inherently bad." This viewpoint can only be true if the person who believes this consciously or subconsciously realizes they themselves have stepped on a few toes to get where they are and have what they have.
We have all been thoroughly impregnated with seeing ourselves as victims at worst and potential victims at best but it's primarily theoretical. However, our actions, past and present, are very real. Love your fellow man. Not a select few. If you really do, he'll know it. Always remember, if you have any fear at all it controls you and then you ARE "the sheep."
In the words of Aaron Freeman: "If you could save yourself, you'd save us all."