One under-reported aspect of ISIL is that it represents oppressed minorities worldwide. That, of course, is their most effective recruiting tool. Thus, it is not Muslims in general who respond favorably to ISIL, but oppressed Muslims wherever they may be. There is no question that minorities are facing widespread discrimination and oppression worldwide. For example, one reason some Americans support Israel over Palestine is that they view Israelis as White and Palestinians as Colored. The same with Muslims in General. Christians are viewed as White and Muslims as Colored. White is good. Colored is suspect.
Until we recognize and address the discrimination against and oppression of people of color in all societies, groups like ISIL will increase in number People of color increasingly recognize that they are the majority, yet are treated like minorities by so many nations. Beware: ISIL is just the first shot across the bow.
John R. Van Eenwyk 