Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray the tweeter's mental state.
Tweet: @DSWT I despair at this madness! It's beyond #shocking it's cold blooded murder!  How long will #SouthAfrica stand by &amp;watch #WorldRhinoDay
This tweet contains emotions: 
anger, disgust, sadness, surprise