Argument: Trying terrorists shows confidence in US system and ideals
Stuart Taylor. "No Need To Fear A Manhattan Terrorist Trial." National Journal. November 21, 2009: "One advantage is that a civilian trial will show Americans and the rest of the world that our government is sure it can prove the 9/11 defendants guilty in the fairest of all courts; is confident that the hate-filled propaganda of the accused will appeal only to barbarians like themselves; and will not let fear of more terrorist attacks drive the trial away from the most logical venue, which is the federal courthouse near the scene of the most horrific crime."
Eugene Robinson. "Civilian trials help win war of ideals." Real Clear Politics. November 21, 2009: "But there's one more huge benefit to a civilian trial: It would show the preachers of hatred and their followers that we're not afraid of them or their poisonous ideas. It would show that they haven't changed us or our ideals -- and that they never will."