This book examines how and why people use the concept of coming out as a certain kind of person to resist stigma and collectively mobilize for social change. It examines how the concept of coming out has taken on different meanings as people adopt it for varying purposes—across time, space, and social context. Most other books about coming out—whether fiction, academic, or memoir—focus on the experience of gay men and lesbians in the United States. This is the first book to examine how a variety of people and groups use the concept of coming out in new and creative ways to resist stigma and mobilize for social change. It examines how the use of coming out among American lesbians, gay, bisexual, transgender, queer (LGBTQ+) people has shifted over time. It also examines how four diverse US social movements—including the fat acceptance movement, undocumented immigrant youth movement, the plural-marriage family movement among Mormon fundamentalist polygamists, and the #MeToo movement—have employed the concept of coming out to advance their cause. Doing so sheds light on these particular struggles for social recognition, while illuminating broader questions regarding social change, cultural meaning, and collective mobilization.