On September 24, the full Fifth Circuit Court of Appeals—all 18 judges—will hear arguments in a closely watched book-banning case from Llano County, Tex. And last week, a flurry of amicus briefs filed in the case starkly laid out what’s at stake in the litigation: a future where school and public libraries remain bastions of independent thought and inquiry, or a future where government officials have near total control over what can be read in libraries and schools.