The protesters were their because the right wing are in government at the moment so only they can legislate to improve matters.
They were there to promote a cause.
Yes, the destruction of the earth is a worthy cause and something not a left or right wing cause.
Most thinking people, whatever their political beliefs appreciate the ways in which modern living is polluting and destroying the earth and we all do our own bit, probabaly, to look after our planet. We certainly do. The government, a Conservative one, is also making the right moves, as will a Labour one, I dare say.
I do not think that protest, which involved breaking in, and trespassing and posing a danger/threat to others, was appropriate or sensible. The woman involved is not a green warrior, she is a smug prat of the highest order, and Field turfed (no pun intended) her out because there was no security official to do it. That is also a cause for concern.
I have no qualms about peaceful protest. It is needed and in the past I've done my it on demos and sit-ins. I'd never have approached an individual with the aim of either screaming in his face or accosting him, nor would I have broken in to buildings. Criminal activity isn't clever, ever. What were her reasons for getting up close and personal?
She achieved nothing but is probably wallowing in her notoriety. Mark Field acted heroically, she behaved stupidly.