Kim Jee-woon’s "A Bittersweet Life" operates beyond the conventions of a crime story; it's closer to an examination of ideas presented within the framework of a gangster movie. Right from the start, with its opening lines—"It is not the wind and trees that move, it is your mind and heart that move"—the film signals that it intends to be something deeper than just a tale of vengeance. The visuals are exceptional, d…