NBC News reports that Arkansas librarians have filed suit to overturn a state law that puts them in jeopardy.

A group of public libraries and book publishers in Arkansas is pushing back against a growing movement to restrict what children are allowed to read.

Arkansas is one of four states that recently passed laws that make it easier to prosecute librarians over sexually explicit books, a designation conservatives often use to target books with descriptions of gender identity and sexuality. On Friday, a coalition led by the Central Arkansas Library System, based in Little Rock, filed a federal lawsuit it hopes will set a precedent about the constitutionality of such laws.

The Central Arkansas Library System argued in a filing in U.S. District Court for the Western District of Arkansas that Act 372 violates the First Amendment by making it a misdemeanor for libraries to give children access to materials that are “harmful to minors.” The term — which means any depiction of nudity or sexual conduct meant to appeal to a prurient interest that lacks serious artistic, medical or political value and which contemporary community standards would find inappropriate for minors — is too broad, the suit contends. For example, the law would prohibit 17-year-olds from viewing materials deemed too explicit for 7-year-olds.

The complaint also alleges that the law violates residents’ due process rights by allowing local elected officials to overrule librarians’ decisions about book challenges without providing explanations or permitting appeals from those who disagree.

“There’s enormous angst and anxiety on the part of librarians in the state,” said Nate Coulter, the executive director of the Central Arkansas Library System, which has 17 branches in seven cities. “Because not only do they feel like people in the state government don’t respect their integrity, but they’re seen as a hostile party. They’ve been called groomers. They’ve been accused of being pedophiles. They’re basically targeted by a very divisive, angry group of people who are vocal about believing that somehow the library is the problem in our community.”

It’s unclear how prosecutors or judges would handle such criminal cases, but violations of Act 372’s “harmful to minors” provision could result in maximum jail sentences of one year. The law also eliminates protections for librarians and teachers who distribute material “that is claimed to be obscene” as part of their job, a felony punishable by up to six years in prison; the lawsuit isn’t challenging that part of the law.