Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: #HRmanagement must discourage the expediency factor from encroaching on the rolling out of a credible #workplaceviolenceprevention policy.
This tweet contains emotions: 
anger, disgust, optimism