"We support our troops when they shoot their officers," read a banner held aloft by some "antiwar" protesters back in the spring of 2003. Well, jejune anarchists have as much right to free speech as the rest of us, and anyway, surely they were just being provocative. They don't really believe that, do they?

Don't be so sure. On Veterans Day, six days after the Fort Hood massacre, a group that styles itself Code Pink: Women for Peace issued a statement urging President Obama not to send more troops to Afghanistan. It began...