Four images of Mann’s children in the nude were seized in January from the Modern Art Museum of Fort Worth by the police department after allegations of

Three civil liberties organizations are accusing the Fort Worth Police Department of “unconstitutional censorship” and demand that police return the photos seized from a local museum last month as part of a child pornography investigation.

The Fort Worth Police Department removed photographs from an exhibition by the artist Sally Mann at the Modern Art Museum of Fort Worth in what the ACLU of Texas calls a violation of the First Amendment.