Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: Listening to these refugee children, barely a decade old, describe the horrific acts they were forced to commit is terrifying. #DatelineSBS
This tweet contains emotions: 
anger, disgust, fear, sadness