Hannah Natanson writes: “Republican lawmakers across the country are proposing legislation that would target online library databases and library management technology—tools built by a half-dozen large companies that catalogue millions of books, journals and articles that students peruse for assignments. These bills—already enacted in Utah and Tennessee, on the verge of becoming law in Oklahoma, and proposed in at least six other states—are broadly similar. They require databases to remove and block student access to material that is obscene, pornographic, sexually exploitative of children or “harmful to minors”—designations that opponents say could encompass a wide range of texts.”