New details emerging about the suspected shooter behind Saturday's deadly rampage reveal a 22-year-old man with a troubled past who law enforcement say may have been influenced by American Renaissance, a pro-white publication. A law enforcement memo based on information provided by the Department of Homeland Security and obtained by Fox News suggests that alleged gunman Jared Loughner — accused of killing six people, shooting Arizona Democratic Rep. Gabrielle Giffords and wounding 12 others — may have ties to the American Renaissance group, though it's unclear if he was directly affiliated with the publication or group. The Southern Poverty Law...