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: @TenPercent @emmajtracey @MetroUK not at all surprised unf, getting partially sighted Mum &amp; pushchair on trains a nightmare #ignorantpublic
This tweet contains emotions: 
anger, disgust, fear, sadness