Library work structures intellectual worlds as library workers collect, organize, make accessible, and preserve materials for use. This work is not neutral. Libraries, like all institutions, are produced in and through systems marked by racism, patriarchy, and capitalist modes of production. Critical librarianship offers a framework for thinking about our work that asks how library structures came to be and what ideologies underpin them. Viewing librarianship through this frame allows us to imagine new and better worlds on our way to making them.