Political protest through art vandalism casts a wider net than just a direct attack on original pieces of work... An instinctive reaction is to be outraged when we hear of works of art being attacked. Why? Art's great power is in its irreverence. Why should we therefore be reverent of it?
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.