Bernie Sanders launched his long-awaited post-primary movement, Our Revolution, with the fanfare of a presidential campaign. He was introduced by the environmentalist Bill McKibben, who described Sanders as "the most popular politician in America" with plenty of unfinished tasks. For a full hour, Sanders told an audience in Burlington, Vt. — and tens of thousands of online viewers — that they had moved the center of American politics to the left, and could join him in backing "over a hundred candidates" and "seven key ballot initiatives" around America. Sanders regaled his audience on everything from the importance of electing progressives to school boards to the story of how Uruguay fought the cigarette industry. And just as he'd done before the primaries ended, he asked activists to consider how they'd given Democrats the most progressive platform in their party's history.