In "The Jihadis Next Door" documentary British filmmaker Jamie Roberts goes undercover to expose the men and women who are promoting radical Islam on the streets of the UK. One of the most notorious of these hate preachers captured in the film is Abu Rumaysah, a militant for Islamic State.
A signific portion of The Jihadis Next Door focuses on how Rumaysah grew up in a British Muslim household before becoming radicalised to the most extreme extent. By the time that this documentary was shown to the public, it was believed that Rumaysah was operating in Syria as one of the most prolific members of ISIS, often performing executions.
Essentially Jamie Roberts provides a sobering investigation about the radical Islamic problem in the UK and offers some clues as to why people end up believing in such as a hateful ideology.