Neoliberalism is the ultimate cause of the establishment’s rejection. Racism, immigration and nationalism may be the match for the anti-establishment fire: wage stagnation and off-shoring of jobs are the fuel.
Progressives must surface the obstruction posed by the Democratic Party establishment. Primaries are prime time to do that, which means there is good reason for Sanders’ campaign to continue.
In Clintonworld, it seems that playing a central role in catastrophic policy failure or peddling bad economics doesn’t disqualify you from future influence.