Sen. Bernie Sanders. Photo: Mandel Ngan/Getty Images
Why it matters: Shakir, who announced his departure from the ACLU Tuesday afternoon, has a progressive resume that includes stints as senior adviser to Democratic leaders Harry Reid and Nancy Pelosi. He also served as editor of ThinkProgress, the news outlet associated with the Center for American Progress. Shakir is presumed to be the first Muslim to manage a major presidential campaign, according to the Beast.