Of course I'm not suggesting that everyone should be able to carry knives as not to allow them would be discrimination on lack of being Sikh.
Every selection, judgement or decision discriminates, the point of the law is to minimise the range and degree of that discriminate, and to create a hierarchy of considerations. In this instances (rightly or wrongly) religious belief as a protected characteristic trumps the public good, and we're fortunate that by and large the Sikh community hasn't taken advantage of that.
All I am doing is pointing out that so-called anti-discrimination opt-outs actually create discrimination elsewhere.
Unfortunately, the legislation and common parlance making use of the term 'discrimination' is problematic, discrimination can't be avoided. The point is to achieve some degree of equity, where as many people as possible are capable of fulfilling their lives to the extent they'd wish, with as few restricted, to as little degree, as possible.
Further that there is a clear hierarchy in terms of protection from discrimination with religious belief at the top, then non-religious belief and finally lack of belief.
In practice there are instances that go both ways, although probably more for particular religions because they have specific requirements and expectations that those without belief don't. It's good that the majority of the exemptions are for religion, because it means there aren't that many situations where the non-religious need exemptions or special treatment - we are, for want of a better word, the norm.
More of an issue is when religion and other protected characteristics collide, and we're starting to see religious requirements there be eased back in favour of equal rights for women, gay people and the disabled.
And there isn't an equivalence between tradespeople, martial arts and Sikhs works. Tradespeople and martial arts practitioners need to carry blades because they will use them at their destination for a legitimate reason. That is entirely different from carrying a blade that you don't need to use because your belief system says you must.
It is to you and I, but presumably to the Sikh community it is as much a requirement as, say, the Christian woman who took up a case to be allowed to wear a crucifix (I think?) whilst serving as an air steward. It seems silly to me to think of that as a requirement, but the point is that they should not be unnecessarily restricted because of our (lack of) belief - if there were a spate of Sikh related knife incidents that might get reviewed, but for the moment it seems to be working as an appropriate level of acceptance of difference.
Now I'm not saying that the latter isn't reasonable, but if so it must also be opened up (at the least) to others having a similar belief that they should carry a blade, regardless of whether that belief is religious or not.
What is the equivalent, though? What is the non-religious version of a tenet of faith? When a religious tenet or practice is, say, FMG or forced marriage we step in because we have a non-religious 'tenet' of liberty and autonomy. When a religious practice is separate schooling we should be stepping in harder than we are, and there are moves afoot to bring that about because we have a non-religious drive towards equal opportunities for all which includes a basic level of broad education (whether those standards are being adequately upheld as widely as they should be or not). What, though, is the non-religious drive that would allow knife carrying that would override the public safety benefits?
But these examples are not equivalent to someone who is planning to use the blade for a legitimate purpose.
There are very few absolutes in this, it's all a balance of rights and beliefs - if it were simple ther wouldn't be the discussion. There are no perfect correlates, but then - as I've suggested - that's part of the issue. Sometimes there just isn't a secular 'equivalent' to a religious tenet, that's why it's a religion in the first place.
O.