Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: the Bushes were good with the forces of resentment when it made them money and gave them power. Now that it doesn't they've changed tunes.
This tweet contains emotions: 
anger, disgust, pessimism, sadness