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UK judge cast doubt on the existence of climate crisis
(extinctionrebellion.uk)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:
How much each change to the atmosphere has warmed the world:
Recommended actions to cut greenhouse gas emissions in the near future:
Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
It is a stretch to say that their motivation for protesting could never be relevant.
Not so long ago, we had protests which were illegal because the police refused to give them a permit. The protests were because a policeman had raped and killed a woman. The conduct of the police was simultaneously what made the protest illegal and also what they were protesting about.
In this case, the motivation is that the government is failing in its basic duty to protect the lives and future of its citizens (all of them), and it's the government that has passed legislation to make protest illegal.
I would think that the relevance of their motivation was already sorted out during the proceedings.
The defence probably brought it up and the prosecution then probably objected on the grounds that motivations were not being argued, only actions. Hearing those arguments may have gone as far as the submission of briefs and even a separate hearing.
In any case, if the conclusion was that the prosecution's arguments were better than the defence's, then the judge may have been compelled to address that in instructions to the jury.