There's so many places to move to where EVERYTHING is restricted. I don't know why some people are bent on turning everywhere into those silly places.
It's simple. Want everything restricted and feel safe? Move to north Korea and you won't have civilians carrying ANYTHING
There's always other places too where they micro manage their populace
Here in America, if it's legal, and your are minding your own business and are RELATIVELY considerate.... Carry and use what you want
The cry babies can't do a damn thing.

Now, obviously whipping out a katana in Costco is inappropriate. There is a difference between a katana, a Rambo knife and a knife the size of a quarter.
The chair in the room was a more dangerous weapon. Irrational fear? Ya think?