A theoretical framework for understanding public library development is presented; plural agonistics is used in combination with an approach inspired by posthumanism. The framework is related to examples from a study of two Swedish public libraries. Antagonism is viewed as foundational, and democracy as an ongoing process, the task being to transform antagonism to agonism, with institutions like libraries postulated as important spaces for adversaries to meet in dialogue. Libraries are viewed here as constantly becoming institutions, and the librarian's identity as an ongoing enactment of the library. To underscore the crucial role the library fills in society, it is conceptualized as a verb and a new word is proposed: to librarize. Discussions about the content of libraries are critical for librarians to find ways to perform the library. The ongoing debate is part of the professional performance of librarians. Librarians should, while acknowledging that there may be no single right way, debate over what is the most beneficial way to facilitate libraries’ vital role in democracy. Conceptualizing of the library as a verb and its implications for librarianship as a possible active agent for radical change within society are offered as articulations of resistance.