The current debate about knife crime seems to have focussed on knives. Asda will no longer allow the sale of a single knife, there are suggestions that carrying a knife with a blade longer than three inches could get you into trouble.
In my car, I carry a selection of spanners and other tools, so that if I have a mechanical problem, I stand a chance of fixing it. And they have been useful in the past, especially for bicycle maintenance.
One of those tools is a screwdriver, with a shaft several inches long. No-one is talking about screwdrivers.
Or sharpened sticks.