On Friday, students and activists marched to the doors of the conference venue – banners waving and arms linked in a human wall to protect Greta Thunberg, who led the procession. There were cheers of: “We are unstoppable, another world is possible”. And just one day after sharing the stage with world leaders, and after meeting the Italian prime minister, 18-year-old Greta told a cheering crowd: “We are sick of their blah blah blah and sick of their lies.”
