WASHINGTON – What’s intriguing about the eruption of Occupy Wall Street is that it’s so similar to other populist movements that are demanding change in nearly every major region of the world. You can’t help but wonder if we aren’t seeing, as a delayed reaction to the financial crisis of 2008, a kind of “global spring” of discontent.

Obviously, circumstances differ: The anti-corporate activists gathered in Manhattan’s Zuccotti Park have a different agenda from that of the demonstrators in Egypt’s Tahrir Square, or last summer’s rioting street protesters in Britain and Greece, or the anti-corruption marchers in New Delhi. These movements mostly lack leaders or clear ideologies, so they’re hard to categorize.

But the protesters do share some basics: rejection of traditional political elites; belief that “globalization” benefits the rich more than the masses; anger about intertwined business and political corruption; and the connectedness and empowerment fostered by Facebook and other social media.

This neo-populism is all the more striking because it seems to transcend traditional political boundaries. The Tea Party movement may wear conservative colors, but it arose as a protest against elites in Washington and Wall Street who were seen to be profiting at the expense of everyday people. Occupy Wall Street comes at these same issues from the left, but the two movements have much in common.

The Arab Spring is the world’s most potent populist movement, sweeping away governments in Tunisia, Egypt and Libya.

Protests in Europe have the same note of mass indignation. In Greece, Italy and even France, you see the anger of the middle class that their debt-enfeebled governments can’t deliver on welfare-state promises.

It’s a stretch, perhaps, to look for shared themes in such disparate countries. But these movements seem to have a common indignation toward leaders who are failing to maintain social justice along with global economic change.

That’s certainly true in America, where the Tea Party and Occupy Wall Street both rage against a financial elite that stumbled into a ruinous recession – and then got bailed out by a Washington elite that’s in hock to special interests. The Tea Party, especially, tapped the bedrock American mistrust of big banks, which dates back to Thomas Jefferson and Andrew Jackson.

Europe’s neo-populism will surely increase , as countries struggle with painful economic adjustments. Population is actually declining in most of Europe. Meanwhile, according to a recent study by the National Intelligence Council, Western Europe’s Muslim population could increase by 2025 to 25 million to 30 million from the current 15 million to 18 million, adding additional strains.

Much of the world’s neo-populist anger is justified, given the greed and folly of recent years. What worries me is the echo of the 1930s, a similar period of economic change and dislocation. When the traditional business and political leaders seemed to have failed during the downturn of the ’30s, populist indignation veered sharply right and left – toward dangerous movements that expressed national indignation at the point of a gun.

America was lucky then to have had, in President Franklin D. Roosevelt, a charismatic politician who could rehabilitate the center. And now? Not so lucky.

David Ignatius’ email address is davidignatius@washpost.com. He writes for the Washington Post Writers Group.