Muslim Ummah has always suffered because of Sectarian Divisions

Sahibzada Sultan Ahmad Ali Sb explaining that all loses suffered by Muslim Ummah have always been because of our Sectarian Sub-divisions & Extremism against Muslims of other Sects. And when Islam as Deen was completed, was there any Sunni, Shia, Barelvi etc or was there only Muslims, if this was the case then why we keep our Sectarian affiliation & identities superior than being Muslim.
Programme held at Sheikhupura
on 6th February 2011.