As a sociologist, I often feel as though much of what I teach and research has a tinge of apocalyptic despair. As a result, I've started looking into topics that center on (or have an element of) joy, hope, happiness, laughter, or playfulness.
In searching for things that make me smile, I've come across a growing body of scholarship on the importance of play in social movements. The research suggests that play helps to build community, maintain interest in a social cause, invites people into the movement, fosters civic engagement, and diffuses power (e.g. clowns who confront police officers).