The idea that advanced civilizations are destined to wipe out less develop cultures. Darwin was a proponent of that. He categorized more humans based on skin color and facials characteristics too. Watch the video, it isn't a religious bs. There is valid criticism there.
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Earlier I compared an individual's use of science in this thread to a Flat Earther. Flat Earthers don't ask themselves "Is the Earth flat?". They say "The Earth IS flat, and I'm gonna prove it." Que the constant disregard of round earth evidence.