"At least you accept it is an entirely personal and subjective judgement. I do not accept that it. But the principle of subjectivism does not obtain in law."
But the law is subject to personal and subjective judgement. That's the way the UK legal system works, case law, how the law was applied in previous cases.
What the law says about knives is that when carrying one the defences are having a "good reason" and/or "lawful authority".
It does then clarify that work, national costume and religion are examples of a "good reason" but are not the only instances.
That's it.
"We should not say: a lot of people want to carry a knife for subjective reasons: therefore they are allowed to."
Well we do, or the law does. If you've got a "good reason" and can convince the police, judge and jury of that then you're OK.
Which is perfectly sensible.
The law shouldn't have to bluntly state each and every reason why it's OK to carry an offensive weapon, that would make it completely unworkable.
'Nothing like that at all. The NRA believe that the US cannot ban arms as it's a constitutionally protect right essential to their country.'
"How is this different from religious belief?"
Because I believe that religious beliefs can be legally banned both in terms of what the law of our country allows and in terms of keeping to our "principles".
The NRA believe neither about guns.
However just because I believe that something could be banned does not mean that it should.
"If you would be happy to see eight hundred people murdered with a kirpan before wanting it banned then we are very different people."
But very crudely that's how the law and freedom works here, and no matter how terrible it is to see it spelt out that way it's pretty much true.
Things are by default allowed.
Things hurt society.
Society acts and restricts the freedom.
We, as a rule, don't just take away freedoms because of what "might" happen or the damage it "could" inflict.
And it's always a balance between how much destruction and death we are willing to accept vs. how much we like the freedom.
For example drinking almost certainly kills more than 800 people a year.
Personally I think that 800 murders would be too many and it's very hard to know at what number society would twitch and take a freedom away.
However right now when the best you can come up with is one possible instance in this country is clearly not the time.
We can't, or to be more accurate we shouldn't, make laws in this country via Daily Mail style panic reactions.