I have to say I disagree, I know you guys are tired of my disagreeing with you, but I can't not say it.
The democratic base has a bulwark against tea party like movements. NO one can win the democratic primary without the minority vote, and especially without the black vote. This is why Bernie didn't win.
Now, I do believe the party has moved to the left, but that happened without Bernie. Bernie capitalized on that IMO, he did not cause it. I often even wonder if Warren feels her work was appropriated by him. And let's put aside wall street for a minute, where exactly did the party move left? I believe that AA's are a big part of that move. They moved the party to the left on criminal justice, on drug sentencing, on racial disparities in sentencing.
I just disagree with anyone who believes the future of the Democratic party is with white people. I'm sorry, it's not. This doesn't mean white people aren't important, in fact, single white women are actually a big part of the Obama coalition, but the future of the party isn't white. I personally feel this feel the bern thing was our own last gasp of angry white men. Sure there were some women, there are some on the angry right too! But it's mainly the last gasp of white male hegemony. White men don't elect our nominees anymore, they don't. They never will again.