@Kevadu exactly. How could someone claims to be part of a religion, claims to be acting like one but can't even explain what reference he/she used, in what part of the holy book, in what part of the messenger's messages? Even if he/she could say one reference, it would be taken out of context.
@oldchangeling ISIS is not islam. They can't even recite the very first chapter of their holy book, disregarding their god and prophet. I would say they're just crazy maniacs.