As much as the brutality bothers me, what disturbs me even more is that this was done in the name of Islam. Sick bastards exist in the world and there is nothing to do to stop them, but it just astounds me that people actually believe that their 'just' God condone's such acts of atrocity. These extremists have turned Jihad into a curse word.
I wish I remember the quote from the movie Dogma, but it has something to do with peoples beliefs are the most dangerous thing of all. They are ideas that become polluted by principle and give people what they feel is something worth dying for.