Light Yagami, a character from the anime "Death Note," rationalizes his actions by believing that his method of using the Death Note to eliminate criminals will create a safer and more just society. He sees himself as a "god" of justice, who is purging the world of evil and creating a world free from crime. Light justifies his actions by convincing himself that sacrificing a few lives for the greater good will ultimately lead to a better and more orderly world.