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: This is kind of fucked up, but my brother is about to join the police academy....and I'm not happy about. And I'm not the only one.
This tweet contains emotions: 
anger, disgust, pessimism, sadness