Sari Hanafi, an associate professor at the American University in Beirut, said for Arab governments resentful of the Western push for democracy, the protests presented an opportunity to undercut the appeal of the West to Arab citizens. The freedom pushed by the West, they seemed to say, brought with it disrespect for Islam. Hanafi said the demonstrations "started as a visceral reaction — of course they were offended — and then you had regimes taking advantage, saying, 'Look, this is the democracy they're talking about.' The protests also allowed governments to outflank a growing challenge from Islamic opposition movements by defending Islam."

And note this:

"The wave swept many in the region. Sheik Muhammed Abu Zaid, an imam from the Lebanese town of Saida, said he began hearing of the caricatures from several Palestinian friends visiting from Denmark in December but made little of it. 'For me, honestly, this didn't seem so important,' Abu Zaid said, comparing the drawings to those made of Jesus Christ in Christian countries. 'I thought, I know that this is something typical in such countries,' he recalled."

Like race riots in the early 20th Century, this is a case of ignorant yahoos being exploited by elites in order to protect the elites' power against civilizing influences.

UPDATE:  Also consider this by Michael Kinsley on Slate:

“The bewildered prime minister of Denmark, trying to calm the whirlwind that has descended on his innocent, unsuspecting country, gets it spectacularly wrong when he reassures disgruntled Muslims that Denmark supports "freedom of religion" and is "one of the world's most tolerant and open societies." Tolerance, openness, and freedom of religion are not what they have in mind. A lively debate is going on about whether Islam really does forbid any portrayal of the prophet, however benign, or whether that is a recent innovation of some subset of the faithful with possible ulterior motives. This debate misses the point. Some Christians believe they are required to wear particular sorts of clothing. Some Jews and Muslims don't eat pork. They don't claim that their religion requires other people to wear special clothing or avoid eating pork. Tolerance and ecumenism can only do so much. They have nothing to offer a Muslim in Afghanistan who is personally insulted and enraged about an image that appears in a newspaper in Denmark."