I like this thread, and what I have read here makes me feel good about being a member of this forum. I agree with much of what has already been said.
As for my personal point of view, having a good-natured laugh at the expense of someone who has what seems like a silly reaction to a knife being innocently carried or used is one thing, but expressing mean-spirited hostility towards people who have such a reaction, is something altogether different. I don't see anything wrong with a bit of good-natured joking, after all, we can't take ourselves too seriously, but mean-spiritedness is just that- mean-spiritedness. I don't think it's cool, or funny, or fair, to cast aspersions on peoples intelligence, or manliness, or upbringing, simply because they're different than us. In my opinion, that's the conduct of bullies and jerks.
That being said, I see a big difference between a person reacting to a knife, and a person over-reacting to a knife. If a person reacts to a knife with a joke, or a snide or ignorant comment, or with some amount of apprehension, I don't mind. I would likely consider such reactions to be silly and just ignore them. Or, if a person reacted with some amount of fear, I might consider why they were afraid, I might even ask them politely why they reacted in such a way.
On the other hand, if a person became hysterical at the sight of my knife, if they made a big scene ("OH MY GOD HE'S GOT A KNIFE!!! SOMEBODY CALL THE COPS!!!"), or if they did in fact call the police on me, or if they complained to a manager and the manager ordered me to leave as a result, or if they did anything else that had a negative impact on my life, then I would consider such behavior to be over-reactions, and I would have some very unkind things to say about those people. And believe me, I would call them names much worse than "sheeple".
As far as trying to "educate" others on the value, and inherent innocence, of knives, there are limits to how far I will go. I always use knives responsibly and I am always conscious of my environment and those around me when deciding if or how I will use a knife. If someone I know personally, whom I will be interacting with regularly, shows apprehension towards me because of my knives, I will make an effort to convince them that my knives are quite innocent and they have no reason to fear them, not to mention the value of possessing a cutting tool. And if someone I know, or a total stranger, asks me a reasonable question about my knives, or knives in general, I will be polite and try my best to inform them, even if their questions are a bit awkward.
My personal thanks to the OP and all who have shared their thoughts here.