**A twenty-first-century guide for anyone who has access to a smartphone.** This how-to manual looks at specific ways you can create social change through the tap of a screen. Filled with examples of successful hashtag campaigns, viral videos and new socially conscious apps, the book provides practical advice for using your smartphone as a tool for social justice and online activism. This is the first book in the PopActivism series, which includes *Can Your Outfit Change the World?* and *Can Your Conversations Change the World?*