The real 1960s began on the afternoon of November 22 1963. It came to seem that Kennedy's murder opened some malign trap door in American culture and the wild bats flapped out.
All of Koons's best art - the encased vacuum cleaners the stainless-steel Rabbit (the late-twentieth century's signature work of Simulationist sculpture) the amazing gleaming Balloon Dog and the cast-iron re-creation of a Civil War mortar exhibited last month at the Armory - has simultaneously flaunted extreme realism idealism and fantasy.