Gini coefficient data

In here, thanks to econfix
https://blog.elearneconomics.com/aristotle-was-right-disappearing-middle-class-increasing-inequality-disappearing-democracy/

Universal basic income

Finland https://www.bbc.co.uk/news/av/world-europe-47092727/did-finland-s-basic-income-experiment-work
and Stockton, USA https://www.bbc.co.uk/news/av/world-us-canada-50691705/stockton-s-universal-basic-income-scheme

GDP limitations

Thanks to the BBC
https://www.bbc.co.uk/news/world-europe-50650155
and
https://www.bbc.co.uk/news/business-48219687

Festive externalities

Thanks to the BBC
https://www.bbc.co.uk/news/health-50628962