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: #AmericasGotTalent live shows with so many technical faults #disheartening
This tweet contains emotions: 
anger, disgust, pessimism, sadness