Please analyze the 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." and classify its emotional content. Choose from the following emotions: anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust. If no emotions are detected, respond with "neutral or no emotion".
anger, disgust, pessimism, sadness