Darth Vader sat on his pedestal meditating. He saw Anakin cutting down Tusken raiders on Tatooine after his mother Shmi died. Haw saw himself cutting down countless Jedi, old and young, because of the things they had done to betray the Empire. He saw Padme choking to death after she betrayed him to Obi-Wan Kenobi. And then he saw himself again, murdering the Separatists, Count Dooku and Obi-Wan again, because they had defied the Empire's wishes. Focus on the hate. A voice told him. Then you will destroy everyone who has betrayed you...