For 10 points, name this Russian composer of the "Babi Yar" and "Leningrad" Symphonies.
This composer included the tooting of a factory whistle in his Second Symphony, while another symphony's final movement opens with a flute duet over a B flat pedal bass, and denounces anti-Semitism.  He wrote an opera about Zinoviy and Katerina Izmailov, and a symphony including a "march" repeated 12 times and a quotation from Deutschland Über Alles. This composer of Lady Macbeth of the Mtsensk District returned to classical models and regained favor with his Fifth Symphony. For 10 points, name this Russian composer of the "Babi Yar" and "Leningrad" Symphonies.
This composer included the tooting of a factory whistle in his Second Symphony, while another symphony's final movement opens with a flute duet over a B flat pedal bass, and denounces anti-Semitism.  
Dmitri {Shostakovich}