Years ago, an angry man rushed through the Rijks Museum in Amsterdam until he reached Rembrandt's famous painting "Nightwatch." Then he took out a knife and slashed it repeatedly before he could be stopped. A short time later, a distraught, hostile man slipped into St. Peter's Cathedral in Rome with a hammer and began to smash Michelangelo's beautiful sculpture The Pieta. Two cherished works of art were severely damaged. But what did officials do? Throw them o…