Income Inequality and Financial Crises:
David A. Moss, an economic and policy historian at the Harvard Business School, has spent years studying income inequality. While he has long believed that the growing disparity between the rich and poor was harmful to the people on the bottom, he says he hadn’t seen the risks to the world of finance, where many of the richest earn their great fortunes.
Now, as he studies the financial crisis of 2008, Mr. Moss says that even Wall Street may have something serious to fear from inequality — namely, another crisis.