Dan Berger is an assistant professor of comparative ethnic studies at the University of Washington Bothell. His work on race, prisons, media, and American social movements has appeared widely in popular and scholarly journals. He is the author of Captive Nation: Black Prison Organizing in the Civil Rights Era, forthcoming from the University of North Carolina Press (2014). Berger is also the author or editor of three previous books: Letters From Young Activists, Outlaws of America: The Weather Underground and the Politics of Solidarity, and The Hidden 1970s: Histories of Radicalism. A longtime activist, Berger is a cofounder of Decarcerate PA.

The Struggle Within is an accessible yet wide-ranging historical primer about how mass imprisonment has been a tool of repression deployed against diverse left-wing social movements over the last fifty years. Berger examines some of the most dynamic social movements across half a century: black liberation, Puerto Rican independence, Native American sovereignty, Chicano radicalism, white antiracist and working-class mobilizations, pacifist and antinuclear campaigns, and earth liberation and animal rights.

Berger's encyclopedic knowledge of American social movements provides a rich comparative history of numerous social movements that continue to shape contemporary politics. The book also offers a little-heard voice in contemporary critiques of mass incarceration. Rather than seeing the issue of America's prison growth as stemming solely from the war on drugs, Berger locates mass incarceration within a slew of social movements that have provided steep challenges to state power.