Inside the biggest gathering of American socialists in decades

Things are looking up for the Democratic Socialists of America. With a membership of 25,000, it is now the largest socialist group in America since the Second World War. And last weekend in Chicago, it held its largest convention, by a considerable margin, in its history.

The event was a fascinating view into an organization that is simultaneously struggling with sudden success and looking to capitalize on fertile conditions to grow even more.

Membership has more than tripled in a year, gaining a large boost from the candidacy of Bernie Sanders and an even bigger one from the election of Donald Trump.