ISIS is a cesspool of individuals who are nothing more than a mere pathetic group of;
Impacable,
Scelestic,
Ideopraxist,
Sicarians.
RLB
Impacable-not able to be quieted or appeased
Scelestic -wicked;villainous
Ideopraxist-one who is impelled to carry out an idea
Sicarian- murderer;assassin