I know others have made this point before but I think it bears repeating. As a Christian my faith is subject to ridicule every single day and from every quarter imaginable. Some people actually go out of their way to try to be offensive to my faith. When was the last time you saw a bunch of Christians burning stuff down and threatening violence because something offended them? We might say that we're offend but that's about it.
Virginia Postrel writes:
My response to this nonsense is to wonder why Muslims don't grow up. If your co-religionists are going to take political stands, and blow up innocent people in the name of Islam, political cartoonists are going to occasionally take satirical swipes at your religion. Those swipes may not be nuanced, but they're what you can expect when you live in a free society, where you, too, can hold views others find offensive.
Cartoon controversy time line.
It is interesting to note that there are no riots in the US. Now why do you suppose that is?