Even in many states where it is legal to OWN them, it is still illegal to carry them. While I’ve personally never heard of anyone owning actual brass knuckles, I know people who have carried those cat kubotans, which is WHY this law was changed.
Just because we can’t find example of someone using them for defense (with short google searches, hardly exhaustive), the number of examples of people fending off others with keys shows it is a viable defense method. How is one able to dismiss that the concept can work?
How can one defend a law that makes carrying these cat kubotans illegal with the potential of lock up and/or fine or a tacked on charge because they bought a $10 key chain on Amazon “just in case”?
Perhaps a compromise would be keeping actual brass knuckles illegal, and allowing the cat kubotans to be illegal. But I find it absurd that a woman can get in trouble for carrying a pointy bit of plastic to feel safer.