Michael Barone: Gentry liberals own the Democratic Party

Michael Barone: Gentry liberals own the Democratic Party:
"...Local demographers crunching Census data estimate that Chicago’s black population fell to 842,000 last year, while its white non-Hispanic population increased to 867,000.
National political significance: in our three largest central cities—New York, Los Angeles, Chicago—gentry liberals have become the dominant political demographic group.
That’s consistent with election results.
Gentry liberals—the phrase is urban analyst Joel Kotkin’s—are the political base of each of those cities’ mayors, Bill de Blasio, Eric Garcetti, and Rahm Emanuel.
That’s something new in American politics.
...Consider Democrats’ priorities during the presidency of Barack Obama, who has lived all his adult life in gentrified neighborhoods. 
Increased taxes on high earners, which gentry liberals are happy to pay (if they weren’t they would have joined other affluent folk moving to Florida and Texas).
...Gentry liberals have the microphone and the money to dominate the Democratic Party.
Whether they can overcome their snobbish disdain and bitter contempt for those beyond their comfortable enclaves, and come up with a winning national strategy, is unclear."