When the Gallup organization first surveyed Americans about same-sex marriage, only 27 percent supported marriage equality. Today, more than 60 percent support it. Millions of people changed their minds on this highly personal and often controversial issue, despite a long history of vilification of LGBTQ people and a campaign to maintain the status quo. This Meet Up roundtable discussion will explore the surprising science behind the success of the marriage equality movement, with practical advice to help changemakers achieve what social scientists call “durable” attitude change—a shift in attitudes that persists over time and resists counterattack. The hosts will engage participants in a conversation that reveals six steps to change hearts and minds—for good.