Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: 'we need to do something. something must be done!!!!!'\n\nyour anxiety is amusing. nothing will be done. despair.
This tweet contains emotions: 
anger, disgust, fear, optimism