Artist who, without permission, spray-painted walls that belonged to other people says it's "disgusting people are allowed to go around displaying art on walls without getting permission."

So... that's humor, right? Banksy is playing with ideas about law and ownership. That's part of his art.

Here's The Daily Mail's article — with lots of pictures — about the "Stealing Banksy" art exhibit.

And here's the statement on the banksy.co.uk website seemingly officially distancing the artist from the exhibition and creating dissonance about whether the ownership of the walls is suspect and anyone buying these walls with the graffiti left on them will face litigation and need to come to terms with the artist:

The title of the exhibit shows that the exhibitioners are also playing — or trying to play — with the concept of ownership, and I suspect that the artist is actually involved in the whole thing, the legal angles have been worked out behind the scenes, and the notice at banksy.co.uk is part of the PR for the show and the sale of the work that is to follow, and, yes, I know that to the extent that I — a law professor (the law professor who went to art school) — am acting like I find this all so intriguing and playful from an art-and-law standpoint, I am augmenting and propagating the PR.