The violent neo-Nazi Robert Rundo thought he’d won freedom last week after a US district court judge in California threw out a federal indictment against the white-nationalist militant, arguing prosecutors selectively went after him and did not put far-leftist protesters through the same treatment. Fewer than 12 hours later, Rundo found himself in jail again on the order of appellate judges from the ninth circuit. It was a stunning turn of events in a case that has bewildered both longtime legal observers and researchers of the far right. Rundo, whose life traces a winding path from gang feuds on the...