Wealth inequality was a major issue "in almost every part of the world," according to Credit Suisse's latest Global Wealth Report. The world had been growing more equal from the start of the century until 2008, but that "trend reversed after the financial crisis," and it looks set to continue to get more unequal.
Russia is the world’s most unequal country, with a staggering 74.5% of the nation’s wealth controlled by the richest 1 per cent of people.
Credit Suisse notes,
"Our estimates suggest that the lower half of the global population collectively owns less than 1 per cent of global wealth, while the richest 10 per cent of adults own 89 per cent of all wealth, with the top 1 per cent accounting for half of all global assets."
But notably, the US is more 'unequal' than South Africa and Mexico...
You will find more statistics at Statista
Given PM Modi's current push to demonetize his nation's wealth, it is interesting to see how high India is on the world's most unequal societies.