And the discussion that comes out of that article is also thought-provoking. One commenter says:

If the peacemakers had persistently marched on Baghdad months ago - demanding the end of Saddam's government (rather than the end of the Bush administration) - I would see them as a true force for peace. As it is I often see them as a part of the isolationist left that is antiwar regardless of the ongoing abuses of Saddam.

and Hartung responds:

I totally agree that pacifists should not be passive when there is opportunity to free people from oppression. However, I am not sure on the particulars or how far they should go. Marching peacefully on Baghdad sounds more like suicide than peaceful intervention to me. The martyrs did not march on Rome, but they did not resist when the oppressive regime sentenced them to death for their beliefs.