If you're down Proudhon's "all property is theft" then graffiti is a kind of tragedy of the commons. Go ahead. Graffiti the Uffitzi, Nelson's column, the Plaka. Stick it to the man!

Nothing more irritating that having your apartment building get a fresh coat of paint, look great, and then someone writing scribble tags all over it.

I think that this sounds good and is a sensible hypothesis, but it's far from clear to me that the corollary of prosperity for those without property is true in practice.