1. To kill oneself as a result of not wanting to be part of a fucked up society.
(Harrison Bergeron is a fictional story about a government that handicaps everybody to achieve absolute "equality."
In the 1995 movie version of the story, Harrison killed himself on live TV because he didn't want to be part of the fucked-up brain-dead society he was born into.)
Sean was always involved in social issues even though it resulted in him being super depressed. Eventually he decided to pull a Harrison Bergeron because he just couldn't take it anymore.