Y! Big Picture: Troubling extremism on homefront

Michael Roark was 19, his girlfriend Tiffany York 17, when they were shot in the head, twice, on Dec. 4, 2011, in Georgia — allegedly to hide four fellow soldiers' burgeoning militia plot to kill Americans. There has been no trial yet, but plenty of details -- alternately horrifying and bizarre -- emerged in hearings overshadowed by political conventions, about the plans for homegrown terrorism, including a presidential assassination. full story