According to the UK's Telegraph newspaper:

Paris’s Gaité Lyrique theatre was long famed for staging operettas by Offenbach and seen as a jewel in the French capital's cultural crown.

But now it is the scene of one of the most dramatic examples of performance art in the history of theatre.

For some 5 weeks the theatre has been occupied by migrants, as reported by the Telegraph:

It all started when Left-wing management staged a free conference on “reinventing the refugee welcome in France” on Dec 10.

More than 200 migrants showed up.

However, when the event, whose speakers included Red Cross officials and eminent academics, came to a close, the migrants refused to leave and have been occupying the building ever since.

The theatre's patrons must be ecstatic that their venue has become the site of a living performance rather than showcasing work by dead white men like Shakespeare, Moliere et al.