People, some in wheelchairs, gather at Lincoln Center as they protest "Death of Klinghoffer" Monday, Oct. 20, 2014, in New York. American composer John Adams' opera has been a lightning rod since February, when it was first scheduled for this season. The first large demonstration came on the Met's Sept. 22 season opening night, featuring a Mozart work, when protesters jeered at arriving spectators. (AP Photo/Craig Ruttle), APTOPIX