Lucysnow, I just want to say that although you are not Muslim, what you stated as far as the Muslim view regarding this film and how this alienates almost all Muslims is very true. You are a very intelligent person, and I am glad you are posting in this forum. If you would like to ask me anything, please PM me, it would be an honor.
Unfortunately, some people such as the producer of this film want to ban the practice of the Islamic religion from all Western countries, and to do this they will lie, deceive people, and spread false information about Islam and Muslims. Some of those who are not exposed to Muslims in the West think that somehow Muslims want to supplant the system here and force Islamic law on the populace. These people don't even know that Islamic law in Muslim countries does not apply to Non-Muslims, only those who profess themselves to be Muslims. They isolate Islamic law to isolated punishments for vague crimes, intentionally not defining them. For example, the punishment of execution for adultery is only allowed in the context if two individuals engage in this in front of four eye witnesses, yet the punishment is written to prevent the crime and dissuade others simply from the known possible crime. There are other examples, but in modern times many Islamic societies have feel into absolute ruin and anarchy, because of wars imposed on them. Do you expect war-torn Somalia and war-torn Afghanistan which have both in invaded and involved in civil wars to be an example of an enlightened Islamic state?
What we have today are the ruins of the Islamic justice system and attempt by war-torn societies to establish a minor semblance of order any way which they know how. The European colonization, genocide, and theft for 200 years of the Muslim World has left its mark on the Islamic world and what we live in today is world in which people are trying to recover a past which was stolen from us. We were forcibly secularized, we never wanted European laws, yet they didn't leave any of our old institutions intact, and they completely obliterated our independence with their chosen monarchies and dictators.
The Muslim psyche is one of a long history of victimization, subjugation, and shame at defeat. Therefore, outrage and grief are natural expressions for a people whose culture was forcibly removed from them, whose great leaders were captured, tortured, and murdered in gruesome ways, and whose way of life has been on the defensive for nearly 200 years of European intellectual, scientific, militaristic, and economic attack.