Postwar damage   The article currently states  In  the lower part of the painting was severely damaged when someone doused it with acid On December  of that same year Ugo Ungaza Villegas a young Bolivian damaged the painting by throwing a rock at it  Can anyone perhaps elaborate on this I mean the dousing of the painting with acid is reported as though this is a normal thing to be done to a masterpiece and so nothing further needs to be said about it Did someone just stroll into the Louvre with a beaker of acid and throw it onto the painting Id be interested to know the circumstances of this event in particular why this was done and how it was allowed to happen Who did it What was the motivation How was it repaired etc etc