A bit of disruption on the M25 will pale in comparison to the disruption climate change will cause in the coming years.
Not that I think JSO is going to make any difference, but they're doing what they think to be necessary to try and draw attention to the issue. I'm not saying they shouldn't face the consequences of breaking the law though.
On a side not, does anyone else think that vegans are onto a loser trying to convince us it's a healthy diet when they all look as though they've been re-animated from a mortuary slab?