Citadel (2012) on Netflix

Tommy Cowley is a young father inflicted with chronic agoraphobia since his wife was brutally attacked by a gang of a twisted feral children. Trapped in the dilapidated suburbia of Edenstown, he finds himself terrorised by the same gang, who now seem intent on taking his baby daughter. Torn between the help of an understanding nurse and a vigilante priest, Tommy sets out to learn the nightmarish truth surrounding these hooded children. He also discovers that to be free of his fears, he must finally face the demons of his past and enter the one place that he fears the most - the abandoned tower block known as the Citadel.