Simple question....
-It can't be education, plenty of uneducated people all across the world.
-It can't be poverty, again plenty of poor people all across the world, and the most intolerant muslims seem to be the wealthiest(arabs)
-Worst of all, so little tolerance towards each other, let alone those with different ideas.
I don't want to hear about it's a vocal minority...or excuses about there are extremists in every religion/society.