People walk past a painting on the so called East Side Gallery featuring a portrait of Soviet nuclear physicist, dissident and human rights activist Andrei Sakharov in Berlin on October 20, 2009. This particular stretch of the wall was taken over by artists who decorated the yet untouchable east side with artwork and political statements, after the wall was taken down in 1989-1990. The wall is currently undergoing renovation work ahead of the 20th anniversary of the wall’s fall, November 9, 2009. AFP PHOTO JOHN MACDOUGALL (Photo credit should read JOHN MACDOUGALL/AFP/Getty Images)