Deutsche Oper Berlin was going to perform Mozart’s Idomeneo. But the director had added a scene to the opera in which the heads of various gods (including Jesus) and of Mohammed are pulled out of a bag.
Ehrhart Koerting, Berlin’s state Interior Minister made some vague comments about security concerns. Citing those concerns, the director of the opera then cancelled the performance.
Koerting has stated that the cancellation was a mistake. The director of the opera has coyly hinted that she might consider reinstating it. I think the whole thing smells a little like free publicity and a means to stir up interest in the opera.