Re: "environmental terrorists"
Lets face it the tree huggers have "form" in respect of various stupid, risky and obstructive actions - climbing industrial machinery at coal power stations, gluing themselves to various commercial and government buildings
Going by that list, it's mostly putting their lives as on the line as what they are trying to protect.
Any drone big enough to have a hairy scruffy type strapped to it would be hard to miss I'd think.
Doesn't really fit the M.O.