An indicator of what can happen within a family:
Javeed went missing in early 2014 and is believed to have been killed alongside another British jihadist. His older brother, Jamshed Javeed, a science teacher at the Sharples High School in Bolton, planned to join his brother in Syria.His family begged him not to go but when he refused they secretly recorded him talking about his plans for jihad. The recording was passed onto police and the older Javeed was jailed for six years.
Link:http://www.telegraph.co.uk/news/worl...-to-jihad.html