How Corporate Provacateurs Made Fran Trutt an “Animal Rights Terrorist” by Will Potter at GreenIsTheNewRed.com
Can't really excerpt this. The short version is that a purported attempt to pipe-bomb the executive of a company that uses dogs for product testing and training was actually orchestrated by a company called "Perceptions International" that was hired by the same executive. Follow the link to go read the whole story.
Remember the old rule of thumb some old 60's activist once taught me. If you want to know who the FBI informant in the group is, they'll be the one urging others to some sort of violent and illegal act.