La muette de Portici
On 25 August 1830, the Belgian Revolution erupted after a performance of Daniel Auber's opera "La muette de Portici" at the Théâtre de la Monnaie, where Marius' father now served as "Premier maître de ballet". The violent street fighting that followed caused all theatres to be shut down for a time, and consequently Jean Petipa found himself without a position. The Petipa family was left in dire straits for some years.