Kirsten Harms, the director of the Deutsche Oper, has decided to cancel performances of Mozart’s Idomeneo, lest Muslims be offended at a scene in which the King of Crete holds aloft the decapitated heads of Poseidon, Jesus, Buddha and Mohammad. Frau Harms proceeds on the fairly safe assumption that any offence that may be taken is unlikely to end in pagans running riot, Christians menacing directors, or Buddhists firing Kalashnikovs into the air in a ritual of practiced malevolence. According to the Frankfurter Allgemeine Zeitung,
The decision is based on a general threat-analysis by the State Office of Criminal Investigation, not on threats against Charlottenburger Haus in general or the production in particular. 
In other words, before the Mohammedans have even had the time to whet their knives or sharpen their damnations, the poltroons of the West are grovelling for their pardon. No specific threat is required. The mere presence of the Mohammedans is felt to be enough. A similar thing happened last year, when Marlowe’s Tamburlaine the Great was expurgated of remarks and scenes derogatory of Mohammed.  Signs of things to come, perhaps. 
 “Schäuble wünscht sich ‘deutsche Muslime’”, Frankfurter Allgemeine Zeitung, 27th September 2006. [“Der Entschluß basiert auf einer allgemeinen Gefährdungsanalyse des Landeskriminalamts, nicht auf Drohungen gegen das Charlottenburger Haus im allgemeinen oder die Inszenierung im besonderen.”]
 See Dalya Alberge, “Marlowe’s Koran-burning hero is censored to avoid Muslim anger”, The Times, 24th November 2005.
 Update: In the end, the unexpurgated production went ahead, along with “airport-style security checks”, while “plainclothes police mingled with the audience”, and “[d]og teams checked out the aisles and foil sheets were stuck to windows in order to make them shatterproof.” Roger Boyes, “A fright at the opera: champions of Mozart brave cultural divide”, The Times, 19th December 2006.