For things that I simply don't comprehend, like this rioting over cartoons episode, I try to find an analogous situation in 'my world' and figure what we'd do. Knowing that there's nothing in the Koran against drawing cartoons of The Prophet (it's just something the clerics have thought up) I tried to find where something like this had happened in Christendom to see how we reacted. The closest I've come to a comparison is the prohibition for Catholics (I was raised Catholic) from eating meat on Fridays - it wasn't in the Bible but was instituted by the Pope (the prohibition ended about 30 ago but I spent my entire childhood 'knowing' it was a sin to eat meat on Friday). I'm trying to remember how many riots we Catholics went on because the Protestants, Jews, Muslims, etc, disregarded our beliefs and ate meat on Friday. Of course, I don't remember a single instance of us thinking that other religions had any reason to abide by our tenets.
What in hell are these crazy muslims doing anyways?
I've come to one conclusion. Anyone who thinks this is a religious issue is looney-tunes. It's 100% political and, as happens so often in the Middle East, their powers-that-be (the clerics) are fomenting rage against the West in order to keep it's focus off of them.