No, guys. You don't get the point. Drawing prophet Muhammad's face is not allowed in Islam. This does not have anything to do with "growing up". Cartoon is just a cartoon, yes, but that does not mean you have to reform other people's religion. It is like, you are changing a law in math just because you are PhD in Psychology.
And, if this is about Muslims immigrant annoying the hell out of the native citizens, I think you have to see both cases in separate manners. The Muslims may be guilty in the second case but in this drawing case, really, it has happened before. They know the drill. Why repeat the hell-hole?
Take this for example, cows are holy animals in Hinduism. Should a muslim person like me sacrifice a cow in front of the Hindus who happen to have migrated to my hometown and yell "Grow up, Hindus!" (well, I heard some Muslims actually did that but they have received their punishment) and even if I did such horrible thing, I shouldn't be surprised if my disgusting act got into the internet and all Hindu people miles away in India got mad at me and threaten me with murder. That will happen surely.