Should Sikhs wear crash helmets?

With todays health and safety regulations and our dangerous roads is it time sikhs were made to wear safety crash helmets on motorbikes? Also is carrying a knife around in public sending the right messages out with all the violence in the UK today ?
Would we let a samurai warrior from japan carry a ninja sword around sainsburys

I have seen loads of sikhs on bikes wearing turbans. How come when they play cricket they wear safety helmets then. This is just a stand against Brits and our laws. They refuse to conform to our laws and are laughing at us. And as an officer in the prison service, trust me, these ceremonial daggers have been used time and time again within the sikh criminal fraternity. When is the Great British public going to wake up, this country is no longer great and is certainly no longer British. Its time to make a stand, conform to our laws or leave, simple.

Ghurka khukuri Knife