And you'll never guess the background and "identity" of the perpetrator.
From the Evening Standard's coverage.
Headline: Royal Opera House chaos as privately-educated 'queer dance artist' unfurls Palestinian flag on stage
"A privately-educated performer who describes himself as a “queer dance artist” sparked controversy at the Royal Opera House after unfurling a Palestinian flag on stage during the curtain call on Saturday night.
Daniel Perry unfurled the flag during the curtain call on the closing night of Adele Thomas’ production of Verdi’s Il Trovatore."
The story goes on to highlight that
Perry "was educated at £48,000-a-year Tring Park School for the Performing Arts in Hertfordshire".
Colour me anything but surprised.