My conviction that our mainstream media has indeed crossed that line was cemented last week.  Love him or hate him, Michael Savage is a bold, in-your-face radio personality who regularly points out ''the enemy within,'' the politicians and journalists who work against the United States' best interests, whether by pushing backward legislation, distorting the Constitution, or supporting our foreign enemies.  He notes that, whether consciously or blindly, by underhanded political tricks, dishonesty, or left-biased news reporting, they consistently oppose policies, programs, strategies necessary to preserve the strength, freedoms, and prosperity of our nation, and they even obstruct and sabotage our efforts to defeat our terrorist tormentors.  The media's big contribution to this effort is reporting that gives the benefit of the doubt to our terrorist enemies, often actually apologizing for American actions against them.  On his radio program last week, Savage painted a vivid picture of the deterioration of American media and the depths to which it has sunk in its opposition to American efforts in our war on terrorism and in its support and encouragement of our enemies.