It is graffiti for goodness sake, and here we have assorted people arguing about whose graffiti it is. Oh what a strange world we live in.
It is an amusing work I grant you, and if someone can find a mug who wants to lift it off and buy it for real money, I can see why the lawyers get called in… but please spare me the “Banksy is a National Treasure” crap. He is a talented criminal who does not think ‘crimes against property’ are really crimes (and the reason they are is because the crimes are actually not against ‘property’, they are against the owner of the property).
I wonder if he expects anyone to respect anything he owns, such as his legs for example? Fortunately for him not everyone thinks the way he seem to.
That said, where he to find himself in a prison cell for said ‘crimes against property’, he should probably be given a brush and some paint to pass the time.