So it appears there's a group of people willfully defacing public property via the deployment of knitting (via @Londonist).

Admittedly they appear to have taken it away afterwards and it is rather cool, but I'd like to think it would qualify under the anti-social behaviour act (in the same way as graffiti and flyposting do) as that would just be amusing.

I've now got images in my head of youths on street corners in their hoodies, shouting malicious abuse at passers by over the top of their knitting needles.