The gunman who opened fire outside the White House Correspondents' Dinner called himself the 'Friendly Federal Assassin' in a chilling manifesto he wrote before the attack. Cole Allen, 31, sent the eerie anti-Trump writing to his family members just 10 minutes before he fired shots at the hotel in Washington, where the ritzy press gala was taking place on Saturday night. The harrowing writing was given to police by a relative, a US official said. According to the New York Post, Allen's manifesto read: 'Turning the other cheek is for when you yourself are oppressed. I'm not the person raped...