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: @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