SocietyAppeal for mercyTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoSocietyAlex Brooke, Salford09/19/2014September 19, 2014British aid worker Alan Henning used to drive taxis. Now he's being held hostage and threatened with execution by "Islamic State" militants. People in his hometown are pleading for his release.https://p.dw.com/p/1DFnCAdvertisement