What undermined Bernie Sanders's challenge to the Democratic Establishment that had become beholden to Wall Street and the Warfare State? Diversity. Because his movement was seen as 'too white', it drove away many blacks and failed to attract Hispanics who just decided to stick with the same old, same old. If the Democratic Party were mostly white, Sanders might have been able to defeat Hillary. But Hillary had the minorities who, lacking in intellect and inspiration, prefer what is deemed 'safe'.
Globalists promote Diversity as the triumph of 'progressivism' and 'equality', but its effect is to strengthen the elites at the expense of a diversified populace that cannot unite effectively against the Establishment.