Research shows it costs taxpayers $31,065 a year to criminalize a single person experiencing homelessness while the yearly cost for providing supportive housing is $10,051.

https://housingmatters.urban.org/articles/homeless-encampment-sweeps-may-be-draining-your-citys-budget

Dear fellow Europeans, I am respectfully asking you to consider signing this European Citizen Initiative to institute a billionaire tax. It was invented by leading French economist Thomas Piketty; I read the whole thing, and it is technically excellent. Hit me if you have questions, but please sign it, it is important.

https://www.tax-the-rich.eu/

It needs 1 million signatures (currently 300K) and seven countries over their threshold (currently three: Denmark, France, Germany).