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: .@RepDelBene: 'Today's proceedings and the entire process is an insult to our constituents.'
This tweet contains emotions: 
anger, disgust