They can't stand when it's not even them who're being lampooned
Back in February, Chip Bok, a political cartoonist for the Akron Beacon Journal, was being attacked on his blog, and also by CAIR, supposedly for making fun of their oh-so precious prophet, when it was really CNN being targeted, for how they blotted out a clear vision of the Mo cartoons on their broadcasts.
And what's really sad was that some "useful idiots" took their side in all this mess. See at Michelle Malkin's for more.
The Beacon Journal summed it up well in an editorial on February 12, and Bok has defended his cartoon. He makes a good point in his cartoon on how CNN simply chickened out in giving people a clearer chance to form an opinion on the Mo cartoons, which are quite mild, IMO.