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: Martin Roth leaving V&amp;A shoes the effects of #Brexit: bright and talented foreigners made to feel unwelcome and leaving U.K. #c4news
This tweet contains emotions: 
anger, disgust, joy, sadness