"We still have to realize that if you are say a historian of the Civil War, you don’t know anything special about say Columbus or for that matter the 20th century. You are a consumer of that information, especially if it’s stuff like Columbus and the American Indians. That information isn’t even in history, much of it. Much of it is in anthropology or archeology."

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But the 20th century suffered "two" ideologies that led to genocides. The other one, Marxism, had no use for race, didn't believe in genes and denied that human nature was a meaningful concept. Clearly, it's not an emphasis on genes or evolution that is dangerous. It's the desire to remake humanity by coercive means (eugenics or social engineering) and the belief that humanity advances through a struggle in which superior groups (race or classes) triumph over inferior ones.

— Steven Pinker