U.S. feminist organizing around pornography began in the mid-1970s during a moment of heightened divisiveness within the feminist movement. Anti-pornography feminists drew intellectual inspiration from late 1960s and early 1970s feminist theory as well as a burgeoning feminist anti-domestic violence/anti-rape movement. These perspectives argued that male sexuality was inherently violent and women were unmitigated victims of pornography. In the early 1980s, feminist sex radicals sought to counter this discourse by calling for an open-ended dialogue about women's sexuality. However, when anti-pornography feminists sought to legislate pornography, sex radicals morphed into an anti-censorship bloc that deployed a broad counter-discourse around the fundamental categories of feminist theory. This thesis explores how feminists used a representative "woman" category for discrete group-making projects around sex and pornography, and argues that these groups' distinctive agendas ultimately contributed to the disintegration of the large-scale feminist movement in the United States.