In that little burst of "activism" going on at the time, the same bunch tried to blow up a local oil company's tank farm. Who know how big a mess that would have made.
If these people really thought they were saving the environment by destroying property they'd be idiots. Whatever they destroy gets repaired or rebuilt - so whatever "harm" was caused by their target is effectively doubled.
Of course they're just communist tools, out to destroy the evil that is wealth and property.
I agree, that's exactly what it's about with them.