Yet again it turns out that the Sikh exemption on carrying knives was a brainwave of the Theresa May government. I don't mind Theresa as a person - I think she was a very honourable public servant - but by jingo there were some daft policies enacted on her watch.
You kind of expect Labour to be useless on this kind of issue, but we also have to account for a big pro-Sikh lobby in the Conservative Party (and, weirdly, Tommy Robinson's circle)
I have no animosity towards the Sikh community, and it may be unfair to hold them responsible for a family of psychos, but look, handguns were banned because of one evil man, and if you must carry whacking great knives around as a symbol of your faith, I'd love to know why a wooden or plastic kirpan wouldn't do.