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: #DamilolaOurLovedBoy So upsetting 😢😢. Why do people want to hurt others! Such a cruel world we live in #heartbreaking
This tweet contains emotions: 
anger, disgust, pessimism, sadness