It is not sufficient that some billionaires give large sums to charity, seeking thus to influence society in accord with their own wishes. We must tax them so the state has money to carry out the people's decisions rather than the billionaires' wishes.

The state has a big job to do, and that costs a lot of money. Everyone but the poor must contribute what they can, and wealthy people can contribute more.

The billionaires in Davos did not seem to worry that we might make them pay their fair share of taxes. Or even make them pay a 70% marginal rate on the income after the first 10 million.

But we will get there.

First they ignore you, then they laugh at you, then they fight you, then you win. Thanks to Ms Ocasio-Cortez, we have reached the stage where they laugh.