Pakistan's sectarian divideTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoMalik Ayum Sumbal11/23/2013November 23, 2013Zubair Ahmed was preparing for prayers and a special meal with fellow students at his Sunni Muslim learning center in Rawalpindi on November 15. But many of his friends were killed by Shiites in what was one of the city's worst sectarian attacks.https://p.dw.com/p/1AMVaAdvertisement Report: Malik Auyub Sumbal, Rawalpindi, Pakistan