Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: That was absolutely the two worst National Anthem singers I've ever heard, both of them screwed up the words #awful
This tweet contains emotions: 
anger, disgust, pessimism, sadness