The Iron County (Utah) prosecutor dropped charges against four animal activists accused under the state’s so-call ag-gag law, said Associated Press. As a result, the four will each face a single count of criminal trespass. Police initially charged the four with entering private property to photograph farming operations. AP says a state law makes it a crime to conduct undercover investigations of slaughterhouses and feedlots. A lawyer for the four activists says they were on a public roadway when arrested. Utah is one of six states with “ag gag” laws. The farm involved in the case, Circle Four Farms, raises about 1.2 million hogs per year, said AP.