Gary Trudeau, creator of the 'Doonesbury' comic strip, says cartoonists should draw the line when it comes to offending people. In an interview published in the Santa Barbara Independent:

Q. What did you make of the Danish cartoon mess? I understand that you said you would never play with the image of Allah. But did you feel you should have done so out of a sense of professional solidarity, or to make a statement about freedom of speech?

A. What exactly would that statement be? That we can say whatever we want in the West? Everyone already knows that. So then the question becomes, should we say whatever we want? That, to me, is the crux. Do you hurt people just because you can? Because you feel they shouldn’t be deeply hurt, does that mean they aren’t? Should the New York Times run vicious caricatures of blacks and Jews just to show the First Amendment in action? At some point, common sense and sensitivity have to be brought to bear.