Mike Gravel, a former two-term senator from Alaska and fringe Democratic and Libertarian presidential candidate, urged people to stalk a federal prosecutor and his family in order to get criminal contempt charges dropped against Sami Al-Arian, an exclusive audio tape obtained by the Investigative Project on Terrorism shows. "Find out where he lives, find out where his kids go to school, find out where his office is; picket him all the time. Call him a racist in signs if you see him. Call him an injustice. Call him whatever you want to call him, but in his face all the...