Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
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