As the world’s wealthy gathered in displays of money and influence on both US coasts this week, an underlying tension simmered in the background: the anti-rich sentiment sweeping the country and the billionaires trying to fight against it. At the Milken Institute Global Conference in Beverly Hills, Citadel’s railed against New York Mayor for in a plan to tax second homes, while real estate mogul decried blue states’ broader campaigns to squeeze more levies from the rich.