Funny you mention that - The actual term muslims use to refer to the likes of Boko Haram and ISIL is 'khwarij' Anyone actually interested in learning about a muslims stance on these extremists should investigate that term:
This covers it loosely but its more complicated:
http://en.wikipedia.org/wiki/Khawarij
Funny also that you mention Nigeria but only in the context of muslim atrocities.
Two thousand muslims were butchered on Friday (mainly women and children) and Christian Militia in the CAR butchered a few hundred moreover the weekend. I remained silent on purpose regarding this but it's amazing how the likes of Scorza seem to overlook these atrocities by anyone other than Muslims ain't it?
Various UN reports say Christian Militia have been carrying out ethnic cleansing of the Muslim population in Nigeria but all we seem to hear about is 'Boko Haram'. You don't hear about the Seleka coalition nor the anti-balaka one which are responsible for war crimes according to the UN much do we?
Africa is a right mess at the moment - but all we seem to get from the mainstream media and the likes of scorza are stories about the 'muslamics' Boko Haram
http://www.aljazeera.com/news/afric...ethnically-cleansed-car-2015196546788288.html