I think the main point was well stated in a Counterpunch column by Gary Leupp today, viz.: "Throughout the country, the pious-sounding campaign on behalf of Darfur simultaneously prettifies U.S. imperialism---if only by asserting the latter can despite itself do some good in this world. The honest campaigners are like Boromir, in the Lord of the Rings, asking, 'What if we were to use the Ring for good?' But you can't use it for good! You can't go 'Out of Iraq, Into Darfur' without bringing the principles governing the former illegal intervention into the latter intrusion you're so naively recommending. Imperialism's not a friendly tool kit that can be used to fix the problems its own lackeys jot down on the collegiate 'peace and justice' to-do list. It's the problem itself."
<http://www.counterpunch.org/leupp05022006.html>
Carl