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: #Aleppo city is burning. The head of #terrorism #Assad regime &amp; #Russia are bombarding the city right now with #whitephosphrus #bombs !
This tweet contains emotions: 
anger, disgust, fear, sadness