This ideology is not something that strives for or can be steered into a productive outcome, it inherently wants to expand its reach and list of enemies until it takes over the entire world or someone shuts it down. It's the cultural analogue of a cancer, and it masks its initial growth phase by pretending to rally behind a virtuous cause, and then shutting down any criticism of it as anti-virtuous.
People from Cambodia, USSR, China, Vietnam, Germany, etc. have seen this before, but the current generation of westerners has not, so they're giving it the benefit of doubt and allowing it to gain momentum - it seems to be rallying behind a virtuous cause, after all. This is what GP and I are saying: alarm bells are going off in our heads because we have 1st or 2nd hand experience of how this plays out. And just like back then, people now are going 'naaaah, it'll be fine'.
Lord of the Flies should remain mandatory school reading forever. It's a warning tale exactly about this.