Michael Harrington (1928-1989) was the most important advocate for democratic socialism in the United States in the latter half of the twentieth century. He is widely, and deservedly, recognized for writing The Other America, a seminal exposé of poverty in the United States. However, Michael Harrington was not simply a public intellectual but a political activist who developed a vision to make democratic socialism into a major force in American life. His strategy was to realign the Democratic Party by driving out the business interests and transform it into a social democratic party. This new party of the people would then not only represent the interests of the vast majority and pass genuine reforms, but begin the transition to democratic socialism. Michael Harrington’s politics and vision have outlived him and they remain the “common sense” of much of the American left, shaping debates in the organization he founded, the Democratic Socialists of America (DSA).