Released in the wake of postwar concerns over European totalitarianism, "Higher Education for American Democracy" offered a blueprint for a more socially inclusive college experience--one that could help bolster informed and thoughtful civic participation throughout the nation. Much of the six-volume report commissioned by President Harry Truman proved prescient in transforming colleges and universities in the United States over the second half of the 20th century. Taking the massification envisioned by Higher Education for American Democracy as the backdrop, Jeffrey Kidder and Amy Binder reveal how collegiate activism is shaped through two broadly opposing channels (progressive vs. conservatism) that steer students into divergent types of political mobilization and bring them into contact with different social and organizational networks. Their analysis relies primarily on semistructured interviews with 77 politically engaged college students conducted in the fall of 2017 and spring of 2018--that is, the first full school year after the election of President Donald Trump. All student respondents were enrolled at, or had recently graduated from, the University of Arizona, the University of Colorado Boulder, the University of North Carolina at Chapel Hill, or the University of Virginia. These four publicly supported campuses are located in states considered toss-ups in presidential elections, upping the stakes for political activism.