gavin mcgregor-skipper joining us, public health preparedness expert from penn state. >> you are welcome when we return, a tactic to tame animal rights activists. >> "america tonight"s sheila macvicar reports on the growing state movements to silence agricultural watch dogs. >> looking ahead to "america tonight" tomorrow. fuelling a fighter's agenda. money. >> where did the oil come from? >> it comes from syria. they bring it across the river, talk it to their village, store it in their homes, and we go to their houses and get it from them. nick schifrin investigates the blood money behind the rise of that's tomorrow on "america tonight". >>> in some parts of the united states filming animal abuse on a farm is now a crime. to protect the farms, some states introduced laws making it illegal to trespass on agricultural facilities and record activities that takes place. that makes it impossible to expose and save abused animals. washington state is the latest to propose the law. sheila macvicar reports that it's not the only one. some of the video in the report is disturbing. >> reporter: a