IS THIS THE RELIGIOUS LIFE?

http://mobile.nytimes.com/2015/10/28/world/middleeast/freed-prisoners-of-isis-tell-of-beatings-and-torture.html?emc=edit_th_20151028&nl=todaysheadlines&nlid=59712099&_r=0&referer=


To ask in what sense such treatment of people who oppose your beliefs is in any way the product of religion, as we  humans, worldwide, have come to understand the basis of religion, is redundant. More relevant is the question of how any religion can produce such an attitude of inhuman conduct in it's followers.
An d more pointedly, if it can then can it be accepted as a member of the pantheon of religions worldwide; which commonly purport to have one god?