Christina Caron writes: “On social media, Mychal Threets was spreading the gospel of ‘library joy’ to hundreds of thousands of followers. But at his job, as a supervisor at the Fairfield Civic Center Library in Solano County, California, he was facing new challenges. Over a year, Threets filed more than 170 incident reports documenting how library patrons had acted out: property damage, harassment, physical altercations. Like Threets, librarians around the country are struggling to reconcile their desire to serve their communities with their need for self-preservation.”