Suing the jingle bells off everyone this side of the North Pole has tradition ally been the ACLU's favorite form of seasonal joy.... The civil-liberties group hasn't lost its passion for secularism, but this year's litigation news is being made by a different group of plaintiffs.... An ACLU legal bulletin claims that Supreme Court doctrine on the Establishment Clause forbids not only state practices that "aid one religion . . . or prefer one religion over another," but also those practices that "aid all religions" and thus endorse or prefer religion over nonreligion." That dubious reading has found some support...