Will Americans actually support a democratic socialist in the Democratic Presidential primaries? Sanders himself has conceded that the odds are heavily against him. Even if Clinton emerges as the Democratic nominee, a good showing by Sanders could strengthen the democratic socialist current in American life.
We can expect the right-wing echo chamber -- including Fox News hosts, Tea Party politicians, and Rush Limbaugh -- to attack Sanders for espousing an ideology that they'll likely describe as foreign, European, and un-American. But Sanders's views are in sync with a longstanding American socialist tradition.
Right now Thomas Piketty's book, and all the others that have exposed, analyzed and offered prescriptions for our economic inequality, are powerful ideas in search of a movement. Income equality is not like the weather. Rather than just complaining about it, we can actually do something to make it better.