The reason that Boko Haram believes its kidnapping of over 200 Nigerian girls is justified is because of Islamist teachings that the taking of female slaves is justified during jihad. And this jihad is not limited Nigeria. In a recent video, its leader said it is at war with Christianity and democracy.
There are efforts to gloss over the fact that Boko Haram is inspired by Islamist doctrine. Comedian Dean Obeidallah writes that Boko Haram is not “Islamic” and the media shouldn’t describe it as “Islamist,” “Islamic terrorists” or anything of the sort.