Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: This night, room polluted with syringes, notebooks and shadows moving, this kind of night! Away melancholy, away!
This tweet contains emotions: 
pessimism, sadness