Disappearing middle class in our major cities

As urbanologist Joel Kotkin wrote in Forbes just last month, a lot of American cities have become havens of rich and poor… including (and, really, foremost) America’s most progressive-minded cities. New York City…San Francisco… Boston… Oakland… Los Angeles… Washington, D.C… all these big cities share the same income-disparity issues: A vaporizing middle class combined with rising populations of both the poor and the well to do.