It is hard to find academics willing to have a hit at the tyrannical system, since they are soon removed. Yet, UK academic Stephen Leonard, in Travels in Cultural Nihilism, (Arktos, 2017), seems to have done a good job of slaughtering sacred cows, bolding proclaiming that multiculturalism is a failure. I don’t have the book, but there is a good review of it at another site, whose writers are richer than me, so they will not mind the poor borrowing from the richer poor:
https://www.theoccidentalobserver.net/2018/03/28/review-travels-in-cultural-nihilism-some-essays/
“In ‘Psychological Angst’ Leonard attempts to understand why Western populations remain silent as their access to free speech becomes increasingly restricted. He attributes this silence, in part, to the growth of ‘groupthink,’ a “psychological phenomenon that occurs within a group of people, in which the desire for harmony or conformity in the group results in an irrational or dysfunctional decision-making outcome.” In the context of groupthink, which is increasingly underpinned by hate speech legislation, “the power of peer pressure is such that any dissent is socially unacceptable, and would lead to alienation.”