As kevin_thibedeau points out elsewhere in the thread, he's not necessarily wrong. In many states and foreign countries it's illegal to carry a large knife in public without a reason and I'm sure purchases are restricted in some places as well. Most people are more or less OK with that, it seems, so there historically hasn't been a lot of pushback.
So, having been given the proverbial inch (or centimeter), those obsessed with banning potentially-dangerous tools are trying to take the next mile (or kilometer): https://theconversation.com/why-stopping-knife-crime-needs-t...