Mark Steyn explains why Here.
Yes, indeed. Steyn explained it, and now his explanation has been vindicated by actual events. How did anyone expect the terrorists to react, when Britain went all soft and weepy over the last victim?
I was once walking my eight year old daughter through a shopping mall when we came upon some brat kid, screaming and wailing. My daughter wanted to know why the kid was carrying on that way. I said, "Dear, if every time you screamed and wailed I gave you a dollar, what would you do?" She's a bright child, and got the answer right away.
"Those of us who don't fall into those categories....we diminish the real pain of those who really feel it.
The above reminds me of the meditation of John Donne:
"No man is an island,...any man's death diminishes me,...do not ask for whom the bell tolls;.. it tolls for thee".
The European and American Left do not understand that these beheadings foretell their own demise, not just anothers misfortune.