One of the nation's largest neo-Nazi groups appears to have an unlikely new leader: a black activist who has vowed to dismantle it. Court documents filed Thursday suggest James Hart Stern wants to use his new position as director and president of the National Socialist Movement to undermine the Detroit-based group's defense against a lawsuit. The NSM is one of several extremist groups sued over bloodshed at a 2017 white nationalist rally in Charlottesville, Virginia. Stern's filing asks a federal court in Virginia to issue a judgment against the group before one of the lawsuits goes to trial. Stern replaced...