Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: I wonder what American city will be next to protest about police shootings. Who's next? Smh. #whenwillitstop  #howmanymoretimes
This tweet contains emotions: 
anger, disgust, fear, sadness