Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified 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