After a huge bump in membership thanks to Bernie Sanders, and an even bigger one thanks to Donald Trump, the DSA continues to grow. Since its national convention in August, membership has increased from 25,000 to 30,000. We have known since 2011 that millennials have a more positive association with the word “socialism” than the word “capitalism”;¹ Sanders gave this demographic shift from the cold war era a political expression, and DSA has given it an organizational expression. Now thousands on the left are scrambling to answer the question, “What do we do with this newfound energy?”