At the same time, all over the world corrupt elites, oligarchs and anachronistic monarchies spend billions on the most absurd extravagances. The Sultan of Brunei owns some 500 Rolls-Royces and lives in one of the world’s largest palaces, a building with 1,788 rooms once valued at $350m. In the Middle East, which boasts five of the world’s 10 richest monarchs, young royals jet-set around the globe while the region suffers from the highest youth unemployment rate in the world, and at least 29 million children are living in poverty without access to decent housing, safe water or nutritious food. Moreover, while hundreds of millions of people live in abysmal conditions, the arms merchants of the world grow increasingly rich as governments spend trillions of dollars on weapons.

In the United States, Jeff Bezos – founder of Amazon, and currently the world’s wealthiest person – has a net worth of more than $100bn. He owns at least four mansions, together worth many tens of millions of dollars. As if that weren’t enough, he is spending $42m on the construction of a clock inside a mountain in Texas that will supposedly run for 10,000 years. But, in Amazon warehouses across the country, his employees often work long, gruelling hours and earn wages so low they rely on Medicaid, food stamps and public housing paid for by US taxpayers.

Not only that, but at a time of massive wealth and income inequality, people all over the world are losing their faith in democracy – government by the people, for the people and of the people. They increasingly recognise that the global economy has been rigged to reward those at the top at the expense of everyone else, and they are angry.

Millions of people are working longer hours for lower wages than they did 40 years ago, in both the United States and many other countries. They look on, feeling helpless in the face of a powerful few who buy elections, and a political and economic elite that grows wealthier, even as their own children’s future grows dimmer.

In the midst of all of this economic disparity, the world is witnessing an alarming rise in authoritarianism and rightwing extremism – which feeds off, exploits and amplifies the resentments of those left behind, and fans the flames of ethnic and racial hatred. …

… Taking on the greed of Wall Street, the power of gigantic multinational corporations and the influence of the global billionaire class is not only the moral thing to do – it is a strategic geopolitical imperative. Research by the United Nations development programme has shown that citizens’ perceptions of inequality, corruption and exclusion are among the most consistent predictors of whether communities will support rightwing extremism and violent groups. When people feel that the cards are stacked against them and see no way forward for legitimate recourse, they are more likely to turn to damaging solutions that only exacerbate the problem.

This is a pivotal moment in world history. With the explosion in advanced technology and the breakthroughs this has brought, we now have the capability to substantially increase global wealth fairly. The means are at our disposal to eliminate poverty, increase life expectancy and create an inexpensive and non-polluting global energy system.