In J.R.R. Tolkien’s masterpiece The Two Towers, he wrote a scene in which the tree-giant Ent named Treebeard prepared to battle against the evil wizard Saruman for his part in the wanton destruction of Fangorn Forest.“Wizards ought to know better: they do know better. There is no curse in Elvish, Entish, or the tongues of Men bad enough for such treachery.” This quote came to mind as I reflected on the shooting of two National Guardsmen in Washington, D.C. For two weeks now, a growing number of congressional Democrats played the part of pawns in a well-funded, highly coordinated campaign...