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: In 2016, Black people are STILL fighting to be recognized as human beings. #cantsleep
This tweet contains emotions: 
anger, disgust, sadness