Eric Frein, the man accused of ambushing a Pennsylvania State Police barracks, killing one officer and wounding another, has been charged with two counts of terrorism in addition to first-degree murder. Frein has called the killing of Cpl. Bryon Dickson in September an “assassination.” Police say they found a letter addressed to “Mom and Dad” on a thumb drive belonging to Frein. It said that only a revolution “can get us back the liberties we once had.” Frein was arrested after spending weeks evading capture in the woods. According to his lawyer, police refused to tell Frein that his family had hired an attorney for him the night he was captured.