You don't have any references because what you say is not true. There was plenty of negativity in the Democrat newspapers about Lincoln and his actions. Worse than anything Bush has had to endure from the likes of Michael Moore or the New York Times. Much of it was quite harsh both concerning his policy and very personally hateful toward him. Those papers and editors were not disturbed. They published without interruption throughout the war.
The papers and editors who were shut down were the Copperhead (pro-Confederate) sheets who practiced sedition by encouraging soldiers to desert or called for support for the Rebel Cause. Sedition in a time of war is an actionable offense, then and now. Since Vietnam, we have been too damn "sensitive" to enforce those laws.
lincoln had them tortured,raped,abused & often murdered for "holding disloyal opinions" or in "preventative custody".
ANY excuse to silence dissent was good enough for lincoln & his coven of thugs.
free dixie,sw