U.S. inequality can be measured two ways – by wealth or by earnings. Either way, most working Americans are losing out. It’s the 1920s again for the richest 1 percent of Americans, and a recent analysis of the wealth gap illustrates why they’re able to live like the fictional Jay Gatsby, portrayed by Leonardo DiCaprio in the new movie, “The Great Gatsby.” The value of their wealth rises and falls with the stock market. But since the 1960s, they have consistently held 33 percent to 39 percent of the wealth owned by all Americans, including their stock, mansions, commercial real estate, and businesses, according to economist Edward Wolff at New York University. In 2010, the last year examined by Wolff,…