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: for an lgbt person to tell someone else that how they identify isn't valid is so sad and against everything we should stand for
This tweet contains emotions: 
pessimism, sadness