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: Another grim &amp; compelling news report by @Nawalf on the blockade of aid to the starving in #Yemen #BBC #dosomethingpoliticans
This tweet contains emotions: 
disgust, sadness