From Kings to suffragettes, from the IRA to artists themselves, there is a long history of art being the focus of attack both from the state and from the public. This history of iconoclasm, or image breaking, is captured in this wide-ranging and fascinating exhibition at the Tate Britain.
There are only about three paintings on this planet that I am able to say that I 'like', but last week Vladimir Umanets, the Yellowist, decided that one of them wasn't quite good enough. So he decided to improve it, with the addition of some half-legible scribbling in one of its corners.
Vandalised paintings, of course, leads us down only one path: tighter security measures at galleries, lenders being more reluctant to send works to Britain, and art becoming less accessible for you, me and generations to come.
As much as I loved the artworks, I don't find myself angry at the act of vandalism per se. The thing which bothers me is the knock on effects of vandalism - the fact that there will be people who are furious and that fury could end up limiting the physical enjoyment of Rothko's work.