For another perspective - see C.S. Lewis’ essay:
“The poison of Subjectivism”
https://www.google.com/?gws_rd=ssl#q=CS+Lewis+the+poison+of+Subjectivism
Donald Trump’s “Populism” is symptomatic of that.
What do De Tocqueville’s “Tyranny of the Majority” and C.S. Lewis’ “Poison of Subjectivism” have in common?