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: Indignation: [whispers to date during that terrific Lerman/Letts centerpiece scene] That's his overwhelming sense of indignation.
This tweet contains emotions: 
optimism