There's an interesting discussion going on in the comments section about hard-line Islam and the extent to which it influences Islam in general. Which reminds me of a tongue-in-cheek column written about 15 years ago by B. Michael, who used to be a left-wing satirist around here, unusual in that he was also an orthodox Jew.
His thesis was that adolescence of world religions look quite a bit like adolescence in individuals, only it's measured in centuries rather than years. Look at how crazy the Jews were at 1,400 years, he said, with brutal internecine strife and repeated revolts against the Romans, who always won. Look at medieval Europe: clearly, Christian adolescence was pretty awful. Now, look at adolescent Islam. Frightening, huh?
The good news: everyone grows out of adolescence eventually.
The bad news: it takes centuries.