The mass groupthink is dangerous when instead of a music fad or a movie star idolization it leads to marginalization of a group such as this anti-semitism along with the hatred of anything pro-Trump.
Once young people were no longer taught in school to be independent thinkers they simply followed the group to be popular or fit in. except for the “outsiders” from their in group.
Ralph Walso Emerson on Self-Reliance:
“Insist on yourself; never imitate. Your own gift you can present every moment with the cumulative force of a whole life’s cultivation; but of the adopted talent of another, you have only an extemporaneous, half possession. That which each can do best, none but his Maker can teach him.”
You may not be aware—Harvard tried to remove tenure of one of its professors in more recent times: