This article explores the recent controversy over the American Library Association's poster for Banned Books Week. In particular, this article connects the 2015 controversy to broader historical issues and tensions within American librarianship concerning social responsibilities. The researchers used a qualitative approach, conducting telephone interviews with 26 individuals. The interviews were recorded, transcribed, and analyzed deductively. The interviews revealed deep continuing tensions regarding American librarianship's relationship to responsibilities. First, there is some dissatisfaction with the American Library Association and its Office for Intellectual Freedom. Second, there are competing conceptualizations of censorship and how to apply these differing meanings while remaining socially responsible. Third, there is uncertainty about how to appropriately act as an ally, within librarianship, to marginalized peoples. S pearheaded by Judith Krug in 1982, Banned Books Week (BBW) is a national annual campaign for awareness about censorship in the United States that is "celebrated" in libraries and bookstores across the country. BBW is cosponsored by the American Library Association (ALA), the American Booksellers Association, the American Booksellers Foundation for Free Expression, the American Society of Journalists and Authors, the Association of American Publishers, and the National Association of College Stores. It is also endorsed by the Center for the Book at the Library of Congress. Public, school, and academic libraries host read-ins, display banned and challenged books, and create displays. BBW is supported by the ALA's Office for Intellectual Freedom (OIF), and proceeds from advertisement sales support the office. The ALA chooses a new theme each year and sells several products such as bookmarks, T-shirts, and mugs, although the main advertisement is large posters. The advertising themes have ranged from a flag to a robot pulling out his plug and saying, "Think for yourself and let others do the same," to pictures of books with the words "Forbidden" and "Banned" printed across the texts. Over the years, some campaigns have sold better than others, but none of the advertising was particularly controversial until 2015.