In December 2020, abortion was legalized in Argentina. The years prior were marked by massive protests of hundreds of thousands of women in the streets of the nation’s capital city of Buenos Aires, demanding universal access to free, legal, and safe abortion. Building on existing theories of mechanisms and impacts of mobilization (McAdam 1988; Jasper 1997; Tufecki 2012), my research looks at the reasons young women attended protests and the characteristics of individual protest experiences, in order to investigate the personal significance of pro-choice activism for young women in Buenos Aires. I ask, what kinds of political consciousness and understandings of self, specifically in terms of gender, emerged through protest participation? Interviews with nine young women in Buenos Aires who were in high school or the first few years of university at the time of these protests reveal the following overall finding: protest spaces and protest participation provided young women with an opportunity to re-imagine their gender identity through political action and to develop new understandings of gender roles in Argentina. Participants describe feeling more empowered, being better equipped with tools to identify patriarchal structures in their daily lives, and feeling more motivated to continue with feminist activism even after abortion was legalized. Understanding the personal value individuals take away from protest participation may contribute to theories of why people choose to join in and how protest movements, for reproductive rights or otherwise, can best build momentum.