The show by Danish art group Surrend is aimed at depicting what they say is the absurdity of extremism in all religions.
One of the 21 photos is of the Kaaba – the cube-shaped building inside the Grande Mosque in Mecca – with the inscription describing the stone as "stupid". Another shows an astronaut on the moon standing next to an Israeli flag. The photo has the inscription "Neonazi-Hallucination".
In 2006 an avant-garde adaptation of a Mozart opera was scrapped in Berlin because of threats resulting from the use of Mohammed's decapitated head in the production.