I understand that the presence of a casket at an anti-war demonstration might cause discomfort in the families of troops serving in Iraq and elsewhere. However, I think the casket is fully relevant. The cost of war includes loss of life. Disallowing a casket as a reminder of that loss is cut of the same cloth as an administration prohibiting photos of caskets holding the remains of those from the front. A single casket at a demonstration, although it might be jarring, is certainly less disturbing than 2,000 caskets would be. The loss is real, and hiding it from view doesn't change that.