Notwithstanding his reputation in the contemporary United States as a sort of political conservative, Tocqueville in his own lifetime was very much a figure of the centrist-left. In the French politics of his day, Tocqueville was closely associated with various causes of reform, most notably the abolition of slavery. In this chapter, Robert T. Gannett, Jr. reminds us that Tocqueville’s calls for decisive action and concerns with social reform were appreciated by many figures on the political Left in the twentieth century. These Left interpreters of Tocqueville range from postwar intellectuals such as Hannah Arendt and Albert Salomon to latter-day communitarian thinkers such as Robert Putnam and William Galston to community organizers such as Saul Alinsky and Gene Sharp. Gannett reveals how Tocqueville plays a major role in the writings of Alinsky and Sharp and thus indirectly shaped the theory and practice of community organizing as it has come to be known in the United States and throughout the world.