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, illegal attempts to disrupt fracking, attempting to stop the construction of the second runway at Manchester airport, blocking roads in London.
As true as this is, and whilst it was a valid possibility during the Gatwick scare, we can probably discount it now since no group has claimed responsibility. It's unlikely to be activists given the absence of some sort of manifesto.
It's not the cry of a craven shill to suggest it as a credible possibility - environmental activists have done stupider things. But in this particular case, nobody is trying to get coverage of their aims or manifesto, which means it's probably either:
* Kids being tools
* Russian agents gaslighting us
* Figments of people's fervoured and paranoid imaginations now that they've been led into a siege mentality by the press
I'll leave it to the commentards to rank the respective likelihoods based on Occam's Razor.