Llano County libraries case has lawyers and publishers worried about existing legal precedents

Protesters outside the Llano County Sheriff's office in April. County officials are embroiled in a lawsuit over materials pulled from county libraries. (Credit: Sergio Flores for The Texas Tribune)

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For decades, public libraries across the country — and their staffs — have operated under a modern understanding of court rulings that say books and other materials cannot be removed simply because government officials do not like the ideas they contain.