The New Yorker‘s music critic Alex Ross took the above video as he left the Lincoln Center last night. As he explains in the note accompanying it on YouTube:

From an Occupy Wall Street protest at Lincoln Center, on Dec. 1, 2011. A performance of Philip Glass’s Satyagraha at the Metropolitan Opera has just ended, and in the first three minutes of the video protesters try to get operagoers to ignore the police, walk down the steps, and join the demonstration. Then, after 3:00, Glass recites the closing lines of his opera, which come from the Bhagavad-Gita: “When righteousness withers away and evil rules the land, we come into being, age after age, and take visible shape, and move, a man among men, for the protection of good, thrusting back evil and setting virtue on her seat again.”