To crop or not to crop

Here's an interesting point/counterpoint that appeared in the New York Times photojournalism blog this morning. David Hume Kennerly discusses how Newsweek cropped a photo of his in an article about Dick Cheney. He doesn't think their use was ethical. The Newsweek editor disagrees.

Read both sides and weigh in here. Who do you agree with, and why? Should the photographer have a say in how his photo is used, whether it is used or abused? Are there broader implications beyond just this one photo as Kennerly suggests?