How and why did public opinions about gay marriage shift? In his new book, The Gay Marriage Generation: How the LGBTQ Movement Transformed American Culture (New York University Press, 2018), Peter Hart-Brinson explores this question and more through public opinion data and interviews with two generations of Americans. By using these mixed methods of analysis, Hart-Brinson dissects generational change of attitudes toward gay marriage through interpretive, historical, and demographic analyses. This book contributes to the literature by building upon previous work and moving the discussion of generational change and attitudes forward. Concepts that are important for the book include differences between orientation and attraction, a difference in how the two generations Hart-Brinson interviewed speak about gay marriage. This book is accessible to a wide audience and will be of interest to family and public opinion scholars, as well as anyone interested in public attitudes or gay marriage specifically. This book would be a great addition to any graduate level course on families, as it gives a solid background of the history of the LGBTQ movement as well as attitudes shifts toward gay marriage. Sarah E. Patterson is a postdoc at the University of Western Ontario. You can tweet her at @spattersearch.