The Best Editorial Cartoons You Never Saw

It's often the job of editorial cartoonists to shock their readers. Whether their preaching to the choir or trying to change minds, the images on the editorial page can sometimes make you wince. So, it may be hard to imagine the cartoons that were so offensive they didn't make the cut. Luckily, though, we don't have to imagine it: editor David Wallis has collected them in a book called "Killed: Casualties from the War on Free Expression". We'll talk with David about his book and about our culture's stomach for dissent in the post-9/11 world.