"Graffiti. Term applied to an arrangement of institutionally illicit marks in which there has been an attempt to establish some sort of coherent composition: such marks are made by an individual or individuals (not generally professional artists) upon a wall or other surface that is usually visually accessible to the public. The term "graffiti" derives from the Greek graphein ("to write"). Graffiti (s. graffito), meaning a drawing or scribbling on a flat surface, originally referred to those marks found on ancient Roman architecture."
Graffiti, a form of art to some, in this case controversial to many? What do you think?