The Westminster City Council stated in October 2008 that the work One Nation Under CCTV, painted in April 2008 would be painted over as it was graffiti. The council said it would remove any graffiti, regardless of the reputation of its creator, and specifically stated that Banksy "has no more right to paint graffiti than a child". Robert Davis, the chairman of the council planning committee told The Times newspaper: "If we condone this then we might as well say that any kid with a spray can is producing art." The work was painted over in April 2009. In December 2008, The Little Diver, a Banksy image of a diver in a duffle coat in Melbourne, Australia, was destroyed. The image had been protected by a sheet of clear perspex; however, silver paint was poured behind the protective sheet and later tagged with the words "Banksy woz ere". The image was almost completely obliterated.
The buon fresco technique consists of painting in pigment mixed with water on a thin layer of wet, fresh, lime mortar or plaster. The pigment is then absorbed by the wet plaster; after a number of hours, the plaster dries and reacts with the air: it is this chemical reaction which fixes the pigment particles in the plaster. After this the painting stays for a long time up to centuries in fresh and brilliant colors.
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