Sabotur in Bayreuth during Parsifal

During yesterday’s performance of Stefan Herheim's Parsfal a saboteur blew in a whistle two times. It happened one minute before the end of the performance. I do not know whether this "art terrorist" was spotted by the guards, since he was sitting links and I was rechts, but I am in a mild und leise mood when I say that this idiot should be banned for lifetime. He actually deserves a more