JOEL KOTKIN: Democrats Move Left.

Much has been written about the right-ward shift of the Republican Party, but far less about a mounting left-wing movement among Democrats. While the media tends to dismiss the right-wingers of the GOP as “wingnuts,” it typically refrains from categorizing even the extreme left of the Democratic Party in a similar manner.

President Barack Obama has accelerated this leftward trend in two ways. First, his administration, particularly in contrast to that of former President Bill Clinton, has laid the rhetorical basis for a move to the left by shifting the party agenda on social, environmental and economic policies. Clinton may have declared that “the era of big government is over,” but under Obama an ever-expanding federal government has become the essential raison d’être for the party.

Yet if Obama’s soaring rhetoric set the stage, his weak record of achievement has sparked mounting concern among left-leaning activists. Obama’s success has hinged in part on the far-left portions of the party controlling their more-fevered passions, particularly about ever-increasing income inequality and bans on fossil fuel use.

But now many on the political left are openly critical of the president, notably for his close ties to the moguls of Wall Street and Silicon Valley. These moguls have been the predominant beneficiaries of his economic policies while middle-class incomes have continued to languish – and even fall.

Hey, they don’t call him President Goldman Sachs for nothing.