On your first phrase, you can look at how the actual proper-name Fascism and its friends happened. Or at any anti-democratic movement from the current ones all the way back to the ancient Rome's rise of the empire.

This is "yet more evidence" that science likes to collect, there's no new paradigm hidden there.

On your second paragraph, that's because the people you are talking about are anti-democratic themselves. Even the way your phrase is written singles out "mediocre white males" outside of "disadvantaged" despite what the actual conditions those people have in the real world. That's anti-democratic by itself.