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: If yiu don't respond .o an email within 7 days, you willxbe killed by an animated gif of the girl froa The Ri.g.
This tweet contains emotions: 
anger