So ring the place with Claymore mines. Put snipers, with low light capability, on the roof. Screen everyone through explosive detectors. Anyone who looks the least bit middle eastern, or Chechnyian, gets extra attention (Strip search).
Kill as many Jihadies as possible when they attack. Ditto if they so much as approach the place in "protest".
Won't happen, these are the new "sensitive" Germans. Until that is, they decide it's once again time to go rampaging across Europe.
I agree very much with your suggestion. Defend the arts with snipers and other armaments.
Art that is only purdy pitchers ain't art. Art is art when is has something to say. And the number one thing to say in this world today is "take your dhimmitude and shove it up yur keester."