And a coalition of groups led by the American Civil Liberties Union has filed suit against a new law in Idaho that bans the documentation of animal abuse at industrial farms. Approved last month, the measure is part of a wave of so-called “ag-gag” laws that crack down on those who secretly film or photograph harm to livestock. The suit claims the law is intended “to silence the undercover investigations and corresponding media coverage that contribute to public debate about animal treatment and food safety.”