I would shoot a magician without much hesitation, assuming it to be a trick. Something in this performance was different, I don't think it was a trick.
Not a trick, but the artist's previous works in this Rhythm series were all about suffering, for instance Rhythm 10 and 5 she cut her self, and Rhythm 2 she took medication to give herself a seizure. If you are doing a series on suffering where you injure yourself, the audience is going to understand their role in the performance.