In New York City in 2013, the LGBT activist group Queer Nation interrupted performances by orchestras conducted by Gergiev at the Metropolitan Opera and Carnegie Hall.
https://en.wikipedia.org/wiki/Valery_Gergiev
I don’t think he’ll have that problem in Palmyra. I hope they perform Rimsky-Korsakov’s “Russiàn Easter Festival Overture” to cleanse the place.