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: @RossKemp Omg that is just horrific. Something needs to be done. 😢
This tweet contains emotions: 
disgust, fear, pessimism, sadness