As far as I am concerned the Sikhs fought for the right to wear turbans on their bikes in the UK (back in 1973, I think it was) and they won. And good luck to them. Great, I say.
The rest of us fought for the right not to wear helmets, and we lost - and that is damn bad luck. But I'm not up for whingeing about whether the Sikhs should be made to wear helmets just because I have to.
So, bloody good for the fact that the Sikhs have managed to wrestle a little bit of independent choice away from our political masters.
I've got no time for this 'rights' and 'privileges' baloney either. A right is something given by those with power to those without power. People bang on about their 'rights' usually when they want the powerful to let them do something. They bang on about 'priveleges' when they want the powerful to take something away from someone else. Big generalisation, (I'm feeling too p1ssed off to be detailed about this") but roughly true and the exceptions come to more or less the same thing.
I'll be straight here. I'm British because I was born here and have absorbed the culture and for no other reason. It's not my country: I don't own any of it. And I have no say in how it is run.
OK, every five years I get to put a cross on a bit of paper to choose between two political parties whose main public activity is to squabble about how best to further the interests of the rich and screw everyone else. That's a choice? That's democracy? - 'rule by the people'?

So as far as I am concerned it is just a matter of what you can get out of a political and commercial establishment who have their own agenda.
If people want the right to ride a bike without wearing a helmet they should fight for it. That takes a bit more effort though and it takes collective action. Much easier to whinge about Sikhs wearing turbans.
From where I stand, the moral and financial, religious, national and political arguments are just smoke in our eyes.
OK. Done!
I've been holding back on this since this thread started. And now I feel a lot better!

Kal wrote: Actually Sikh's are generally pretty cool - kind of like Klingon Hindu...

Very few Sikhs smoke. But the drink like fish. Alcoholism is a big problem among them. (I live almost opposite a Sikh temple and there is a big local Sikh community. There are good and bad among them, like any other group, but on the whole they are a great bunch.)