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: I despair at the mouth foaming hostility &amp; dishonesty of those in the Leave camp, &amp; we should expose that.
This tweet contains emotions: 
anger, disgust, sadness