BOISE, Idaho (AP) — A dozen groups representing food safety supporters, free speech advocates and labor unions are helping fight the Idaho law banning secret filming of animal abuse at agricultural facilities.

The Idaho Statesman (http://bit.ly/2oErXyn ) reports that the groups have filed friend-of-the-court briefs with the 9th U.S. Circuit Court of Appeals detailing their opposition. They argue that the law violates the First Amendment.

No groups have filed similar briefs in support of the law.

Idaho lawmakers passed the law making it a crime to surreptitiously videotape agriculture operation...