LONDON, ENGLAND - DECEMBER 13:  A workman uses a high pressure hose to clean graffiti from the base of Nelson's Column in Trafalgar Square on December 13, 2010 in London, England. The graffitied words 'Tory Scum' were written on the monument during a recent protest by students concerning the Government's proposals to increase tuition fees and scrap the Education Maintenance Allowance (EMA).  (Photo by Oli Scarff/Getty Images)