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: @KeithOlbermann depressing how despicable Trump, with no policies, campaigning on bigotry &amp; rancour can be so close, evil immoral disaster
This tweet contains emotions: 
anger, disgust, sadness