“Silence is being hailed as the solution. John Cage’s 1952 silent piece, “4’33”,” is the theme song. The Brits are calling it “Cage Against the Machine,” and the movement for a silent night this Christmas, or Cagemas, has gone viral. In London, Cage’s picture is showing up on fake million-pound notes and the slogan is on posters with clenched fists and Che Guevara’s image.”