From Aberdeen to Afghanistan, for the future of our planet.
This was mass demonstration on a truly global scale.
Images of children from a dizzying number of cities, towns and villages show this is the No1 concern for young people.
In Scotland, around 15 demos took place. Incredible numbers marched through Edinburgh to Holyrood Park, home of the Scottish Parliament.
There were similar scenes in Glasgow in a packed George Square.
And there was an impressive turnout in Aberdeen, a city where the economy runs on oil.
Any suggestion this is a western obsession can be dismissed out of hand.
Young women marched through Kabul in Afghanistan, protected by armed guards.
Ordinary people – including the youngest in our societies – have made their voices well and truly heard.
But are the politicians in power listening?
There will always be obstinate world leaders such as Donald Trump and Brazil’s far-right president Jair Bolsonaro.
They appear immune to expert advice.
But their citizens, just like in Scotland, share the same concerns about what kind of world we are leaving behind.
All over the UK, Europe and beyond, pupils took the day off school in a show of direct action.
World leaders should listen to these children – they’re skipping school to teach everyone a lesson.
