In many cases where people react negatively towards a knife, I believe that what they are really bothered by is the idea of a person
carrying a knife, and not the knife itself. After all, who doesn't have knives in their kitchen? It doesn't make sense that a person would be bothered by a pocket knife, and yet not be the least bit bothered by the much larger knives in their kitchen.
I think the idea of a person
carrying a knife seems particularly threatening to some people. I think for many people,
carrying a knife is something a criminal/dangerous person would do.
Of course if someone pulls out a bowie knife at the mall food court to cut their burrito in half, or pulls out something like a Cold Steel XL Espada to open their mail at the office, then yeah, I can understand people having a bad reaction to both the person carrying the knife,
and the knife itself. Some knives do have a "scary" appearance.
As for myself (resident of California, USA), I do what I've always done- I carry what I think best serves my needs, and I carry what I like. I don't involve other peoples feelings, perceptions, or possible negative reactions into the process. But don't get me wrong, I'm not of the attitude "I don't give a rats ass what others think, I'll do whatever I damn well want!", I just don't worry about it, and I don't see the point in trying to please the rest of the world around me, especially since I've heard plenty of stories of people reacting negatively to knives as harmless and innocent looking as Swiss Army knives.
Furthermore, I don't worry about other peoples reactions because I always behave discreetly and responsibly with my knives. I'm 51, and I've been carrying knives since I was in grade school (carried knives
in grade school too), and what I have NEVER done is make a big show out of using a knife, or play with a knife in front of others, or do anything else with a knife that would give a
reasonable person cause for concern. As for
unreasonable people, well, I can't live my life trying to please them, because there's no pleasing them.
This has been my philosophy, and my practice, for over 4 decades, and I haven't experienced a single negative reaction from anyone yet. So I guess I must be doing it right

.