WASHINGTON — Democrats, including Rep. Betty McCollum, launched into an assault on incivility Tuesday, saying incendiary words from members of Congress were inflaming tensions that could provoke another incident of Oklahoma City-style domestic terrorism. "When Members of Congress compare health-care legislation to ‘government tyranny,’ ‘socialism,’ or ‘totalitarianism’ — in the hopes of scoring political points — it's like pouring gas on the fire of extremism," McCollum said. McCollum's St. Paul office was one of a few that received an envelope containing gasoline-soaked tatters of an American flag and a letter that called her things not fit for print in this...