A Missouri law banning “explicit sexual” images in school materials — including library books — went into effect this week. The restrictions on school materials are one part of a larger law dealing with sexual assault survivors’ rights, added by Republican State Sen. Rick Brattin, who represents District 31 just south of Kansas City. The ban on sexually explicit images applies to public and private elementary, middle and high schools. The new law only applies to visual content, including photos, videos or pictures showing “deviant sexual intercourse” or images “emphasizing” adult genitalia. That means that written text about sexual situations is still allowed, but graphic novels and other visual media could be restricted. The law also makes an exception for “works of art,” “works of anthropological significance” and material used in science classes, but leaves those terms open to interpretation. At least one school district in the Kansas City area is reviewing books in its lib...