1: ( CNN ) Since the headline-grabbing murder of American journalist James Foley by ISIS militants eight months ago , the world has been regularly confronted with a modern form of an ancient , primally horrifying method of execution . 2: But beyond this , some experts such as psychology professor Arie W . Kruglanski suggest , the wave of savage beheadings may be having an unlikely knock-on effect . 3: The wave of ISIS beheadings has horrified people all over the world .
1: a modern form of an ancient , primally horrifying method of execution 2: the wave of savage beheadings 3: The wave of ISIS beheadings