Hey.
The reason why its caused alot of anger among the muslims is because of what the images were representing, and that was totally opposite to what our beloved Prophet Muhammad (peace and blessings be upon him and his beloved family) was/what he did.
You can even read the biography from this link and realise that everything the media is portraying against the muslims is totally against what islam allows/disallows etc.
Life of Prophet Muhammad (peace be upon him and his beloved family)
http://www.islamicboard.com/prophet-...mmad-saws.html
Its against islam to draw/create images of Allaah Almighty (God), nor of his beloved Prophets (peace and blessings be upon them) [this includes Jesus, Moses, Muhammad (peace be upon them all) etc.]
Even though all this has happened, the muslims shouldn't destroy buildings, harm the innocent etc. Because this is transgressing the limits, and this is not what our beloved Prophet Muhammad (peace be upon him) did when he was insulted (nor did the other prophets in their time.) Therefore we should boycott the goods of the countries that approved of what happened, but this doesn't mean that we should commit violent acts; as this is totally against what islam allows.
Instead we should use calm/safe measures, but at the same time - show how we've lost our trust in the people who allowed this to happen. Like i've said before; eg. through boycotting their products etc. But we should not destroy buildings, kill innocent people etc.
This is because in the qur'an Allaah Almighty (God) says:
On that account: We ordained for the Children of Israel that
if any one slew a person - unless it be for murder or for spreading mischief in the land - it would be as if he slew the whole people: and if any one saved a life, it would be as if he saved the life of the whole people. Then although there came to them Our messengers with clear signs, yet, even after that, many of them continued to commit excesses in the land. (5:32)
If you got any more questions - then please do ask. Thanks.
Peace.