The thing was a hot one! A farmer had shot two wolves on purpose. He had seen the wolves on his farm and decided to get them before they caused trouble. He knew wolves were a kind of protected animals. However, he also knew most of his neighbors would shoot wolves, too. Shortly after the farmer skinned the wolves, problems began. It seemed that someone didn't like the idea of killing wolves after all. The officials had arrived. Out-of-town reporters got hold of the story. And now the farmer was on trial for his killing of the wolves. Wolves should  _  according to this passage.
be protected not cause trouble be killed if they cause trouble not enter places where people live