Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture 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