Cultural relativism is the false doctrine that all cultures are equally valid and good. And multiculturalism is the false doctrine that because all cultures are supposedly equally valid and good, everyone must respect everyone else's culture, and tolerate and even celebrate all cultural practices, so that all humans will live together in harmony as one big, happy, tolerant, multicultural family. But this is neither possible nor sensible. The fact is, multiculturalism is madness.
It was Protestantism that transformed western European nations and their Colonial offshoots around the world into the most successful, prosperous and advanced nations the world has ever seen. But there has been a deliberate and concerted assault on these cultures by cultural relativist and multiculturalists, who have used these concepts to break down the influence and the superiority of western, once-Protestant-influenced culture.