I was going to write my own post on the Danish matters, but a number of other bloggers have written posts that are better than mine, despite their relative distance (relative to me) from the focus of the conflict. In particular, Steve Gilliard's view:
Refusing to meet with the Arab ambassadors was a serious mistake. The Syrians showed how seriously
I have been amazed at the way people, first, refuse to understand that depicting Muhammad in any form is a grave insult, second, this was done by a right wing newspaper to piss people off, and third, how shocked Europeans are at the way Muslims feel about a grave insult to their religion.
Now, the Europeans play the innocent party, and people suggest that Muslims should leave if they don't like being insulted in the West.
I am somewhat uncomfortable with the occasional bit of American triumphalism that creeps into the rest of his post, but by and large he is correct---perhaps even including European models of social integration of immigrants. His coblogger Jen intercedes with some of the shallower criticisms of the riots, but he deals with them quite effectively.
Now, as a Muslim myself, I am perhaps somewhat closer to the focus of this conflict, as I said above. It's clear that the Danish paper was intending to slap people when they were down. But a lot of Muslim negative reaction to Western media has a history with which Western commentators are often totally unwilling to deal: Israel. Namely, saying certain things about Israel are rightly or wrongly considered taboo in the West, but saying analogous things about the reasons for opposing Israeli policy (and, frankly, the legitimacy of the Israeli state) are not. Rightly or wrongly. This is considered a cosmic double standard, because Israel is quite frankly the prism through which most of the Muslim world sees global politics. To make use of the Prophet Muhammad himself in this double standard would widely be considered one too many injuries to bear.
(And, of course, some people are suggesting that certain interested second-and-a-half parties are actually instigating this. We'll see if such suggestions pan out.)