This week the Tate Modern became the victim of art vandalism after Vladimir Umanets allegedly daubed his signature on Mark Rothko's 1958 painting Black On Maroon.
It was just the latest in a long history of art attacks that have occurred around the world for decades - raising the issue of whether the general public should be allowed near famous artworks at all.
From the tightly-guarded Mona Lisa to the barely-dry spray paint of Banksy, here's a brief history of art vandalism - enjoy, but please don't feel inspired...