The fact that Bernie Sanders can succeed without the party machine enrages those who sacrificed their idealism to play the game

"Yes, our electoral system is in substantial ways anti-democratic, and the influence of money in politics is pernicious, and Republicans suppress the vote in earnest. But those things have been true forever. They are a given. The job of capitalizing on the enormous demographic disadvantage that the upper class faces in the class war falls to the Democratic party. The Democratic party, however, has never had any interest in really capitalizing on it.

"Now, Bernie Sanders is threatening to make the class war reality by winning the Democratic presidential nomination. His biggest obstacle is not the Republican candidate – a rich, evil cartoon man who is a perfect foil for Bernie’s analysis of what plagues us – but the Democratic establishment. In their eyes, he is an existential threat to their traditional approach of determining their stance on moral issues by finding a point halfway between 'What’s right' and 'What the Koch brothers are advocating via attack ads.'

"You can sense their panic, rising like tree sap. As time grows shorter and the polls in Iowa and New Hampshire trend in Bernie’s favor, the Third Way-style Democrats voice increasingly desperate warnings that a party that lost to Trump may be about to make a mistake. The Wall Street set throws more money at Joe Biden; the famous columnists who backed the Iraq war sound the alarm about unelectability; the candidate who lost to a reality television clown joins in the doomsaying. A Hollywood casting agency specializing in budget comedies could not assemble a less credible group of opponents. One of Bernie Sanders’ greatest advantages in the race is that many of the most unlikable hypocrites in America despise him."

The rest of the story:
Bernie Sanders' real obstacle is not Trump. It's the Democratic establishment. by Hamilton Nolan (The Guardian)