Political Suicide is an achievement/trophy in Dishonored.
How to Acquire[]
To unlock this achievement, Corvo Attano has to broadcast the Lord Regent's crimes during the mission Return to the Tower. If he visits the Propaganda Officer in the broadcast tower, he receives the combination to the Lord Regent's safe. In it is an audiograph, which Corvo must play over Dunwall's loudspeaker system to neutralize the Lord Regent and unlock the achievement.