Star Wars: Unchained
Emotions play a great role in shaping our actions, whether they be well-intentioned or not. When you start letting your emotions guide your actions, your emotions start to change you, mold you. Sometimes we change for the better, sometimes for the absolute worst.
Hatred is a bitter emotion that guides us into a hole so deep, that once we've begin to dig, we can't get out. Even if we think we're back to our "normal" selves, we collapse inside and fall even further down the abysmal pit of bitterness. 'Tis not always our fault that we become so bitter, but the faults of those whose hearts are full of hatred before we change into ... them.